STXKQY_6.0.1 - Documentation Index

Table of Contents

• Welcome
• Summary of changes
• Quick reference
  • Installation and protocols deployment on Linux nodes
  • Upgrade on Linux nodes
  • IBM Storage Scale GUI
  • File compression
  • Security
  • File encryption
  • NFS protocol
  • S3 protocol
  • SMB protocol
  • Active File Management (AFM)
  • AFM-based Disaster Recovery
  • Cluster configuration repository
  • AFM to cloud object storage
  • cloud services: Transparent cloud tiering and cloud data sharing
  • Cloudkit
  • IBM Storage Scale on AWS
  • IBM Storage Scale management API
  • IBM Storage Scale native REST API
  • System Health
  • Data protection and disaster recovery
  • Performance monitoring
  • File audit logging
  • Clustered watch folder
  • Shared memory communications on Linux on Z nodes
• Product overview
  • Strengths of IBM Storage Scale
    • Shared file system access among IBM Storage Scale clusters
    • Improved system performance
    • File consistency
    • Increased data availability
    • Enhanced system flexibility
    • Simplified storage management
    • Simplified administration
  • Basic structure of IBM Storage Scale
    • IBM Storage Scale administration commands
    • The GPFS kernel extension
    • The GPFS daemon
    • The GPFS open source portability layer
  • IBM Storage Scale cluster configurations
  • Signed kernel modules for UEFI secure boot on x86_64 and secure boot Linux on Z
  • GPFS architecture
    • Special management functions
      • GPFS cluster manager
      • File system manager
      • Metanode
      • CES node (protocol node)
      • AFM gateway node
    • Use of disk storage and file structure within a GPFS file system
      • Quota files
      • GPFS recovery logs
    • GPFS and memory
      • Pinned memory
      • Non-pinned memory
    • GPFS and network communication
      • GPFS daemon communication
        • Using public and private IP addresses for GPFS nodes
      • Network communication and GPFS administration commands
    • Application and user interaction with GPFS
      • Operating system commands
        • Initialization of the GPFS daemon
        • The mounting of a file system
      • Operating system calls
        • Opening a GPFS file
        • Reading file data
          • Buffer and locks available in memory
          • Tokens available locally but data must be read
          • Data and tokens must be acquired
        • Writing file data
          • Buffer available in memory
          • Token available locally but data must be read
          • Data and tokens must be acquired
        • The stat() system call
      • GPFS command processing
        • The mmchdisk command
        • The mmfsck command
    • NSD disk discovery
    • Failure recovery processing
    • Cluster configuration data files
    • GPFS backup data
    • Cluster configuration repository
    • GPUDirect Storage support for IBM Storage Scale
  • Protocols support overview: Integration of protocol access methods with GPFS
    • Cluster Export Services overview
    • NFS support overview
      • First-time data capture for CES NFS
        • NFS statistics collection
        • Enhanced debug data collection for hang scenarios
    • SMB support overview
    • S3 support overview
      • S3 architecture
      • Multi-protocol data sharing with S3, NFS, SMB, POSIX, and IBM Storage Scale Container Storage Interface driver
      • Load balancing
      • Reference performance numbers for an IBM Storage Scale CES S3 cluster
      • Migration from Swift Object or IBM Storage Scale Data Access Services S3 to IBM Storage Scale S3
      • S3 buckets API
      • S3 objects API
      • IAM users for S3 access control
      • S3 over RDMA overview and deployment
    • Swift Object storage support overview
      • Secure communication between the proxy server and other backend servers
      • Swift Object heatmap data tiering
  • Active File Management
    • AFM concepts
      • Cache and home
        • Caching modes
      • Communication between cache and home
      • The backend protocol - NFS versus NSD
      • Nonstandard NFS ports for AFM
      • Primary gateway and afmHashVersion
      • Global namespace
      • Revalidation
      • Cached and uncached files
      • Synchronous or asynchronous operations
      • Asynchronous delay
      • Operations with AFM modes
      • Filesets to the same home target
      • Conversion of mode
      • Internal AFM directories
    • Active File Management (AFM) features
      • AFM Network File System version 4 support
      • Active file management-hierarchical storage management integration for the data migration
      • Fast create
      • Support of linking GPFS dependent fileset
      • Force flushing contents before Async Delay
      • Parallel data transfers
      • Parallel data transfer using multiple remote mounts
      • Partial file caching
      • Prefetch
      • Peer snapshot -psnap
      • Gateway node failure and recovery
      • Cache eviction
      • Operation with disconnected home
      • Expiring a disconnected RO cache
      • Viewing snapshots at home
      • Changing home of AFM cache
      • Resync on SW filesets
      • AFM synchronous read mount
      • AFM resync version 2
      • AFM optimized recovery version v2
      • AFM recovery improvements for remove and rename operations
      • Using IBM Storage Protect for Space Management
      • Performing a planned maintenance by using the IW cache
      • Handling IW cache disaster
        • Performing an unplanned maintenance using IW cache
      • Using AFM with encryption
      • Using mmbackup
      • Disabling AFM
        • Disable AFM by using disable-online feature
      • Stop and start replication on a fileset
      • AFM IPv6 Support
        • Example of changing the target address from IPv4 to IPv6 by using failover
        • Creation of mapping for parallel data transfer by using IPV6 address and hostname
      • AFM fast remove for large directories
      • AFM cache synchronization with outband updates
      • Writable snapshots in the AFM local update mode
      • The failover mapping for AFM NFS targets
      • Asynchronous auto prefetch for AFM NFS-based filesets
    • AFM limitations
      • AFM and AFM DR limitations
  • AFM-based asynchronous disaster recovery (AFM DR)
    • Recovery time objective (RTO)
    • Modes and concepts
    • AFM-based Asynchronous Disaster Recovery features
      • Immutability and appendOnly for AFM-DR filesets
      • RPO snapshots
      • Role reversal
      • Failover to the secondary site
      • Failing back to the old primary site
      • Failing back to the new primary site
      • Changing the secondary site
      • Using the primary fileset to make changes to the secondary fileset
    • Online creation and linking of a dependent fileset in AFM DR
    • AFM DR limitations
      • AFM and AFM DR limitations
    • AFM DR deployment considerations and best practices
      • Characteristics of AFM DR
        • Independent filesets in AFM DR
        • One-on-one relationships in AFM DR
        • Active–passive relationships in AFM DR
        • NFSv3 versus NSD exports in AFM DR
        • Trucking features in AFM DR
          • AFM DR trucking use cases
        • Failover and failback
      • Deployment considerations for AFM DR
      • Best practices for AFM DR
      • AFM DR use case
  • Introduction to AFM to cloud object storage
    • AFM to cloud object storage operation modes
      • Fileset operation modes
      • Object operation modes
    • Multi-site replication
    • AFM to cloud object storage parallel read data transfer
    • Connectivity to cloud object storage
    • Eviction in AFM to cloud object storage
    • Data eviction from an AFM to cloud object storage fileset after uploading
    • Audit messages support for the AFM to cloud object storage
    • Partial file or object caching for AFM to cloud object storage
    • AFM to cloud object storage directory object support
    • AFM to cloud object storage support for more than 2 K metadata
    • AFM to cloud object storage policy-based upload for manual updates mode
    • Support of Google Cloud Platform for AFM to cloud object storage
    • Symbolic links
    • Replication by using the manual updates mode of the AFM to cloud object storage
      • Parameters for a new file system
    • Microsoft Azure Blob support for the AFM to cloud object storage
    • Asynchronous auto prefetch
    • Asynchronous notifications and Amazon SQS integration
    • Glacier storage class support for the AFM to cloud object storage
    • AFM to cloud object storage limitations
  • Introduction to IBM Storage Scale on AWS
    • AWS Services
    • Regions and Availability Zones
    • IBM Storage Scale instance types and operating systems
    • IBM Storage Scale usage restrictions
  • Introduction to system health and troubleshooting
  • Introduction to performance monitoring
  • Data protection and disaster recovery in IBM Storage Scale
    • Data backup options in IBM Storage Scale
    • Data restore options in IBM Storage Scale
    • Data mirroring in IBM Storage Scale
    • Protecting file data using snapshots
    • Introduction to Scale Out Backup and Restore (SOBAR)
    • Commands for data protection and recovery in IBM Storage Scale
  • Introduction to IBM Storage Scale GUI
  • IBM Storage Scale management API
    • Functional overview
    • API requests
      • Fields parameter
      • Filter parameter
    • API responses
      • Paging
    • Asynchronous jobs
    • Accessing the IBM Storage Scale REST API endpoint details through Swagger and API explorer
    • List of IBM Storage Scale management API commands
  • IBM Storage Scale native REST API
    • Non-root administration daemon
    • API nodes for IBM Storage Scale native REST API
    • Authentication for IBM Storage Scale native REST API
    • Role-based access control
    • Long-running operations
    • Target nodes field in IBM Storage Scale native REST API
    • Pagination in IBM Storage Scale native REST API
    • Views and fields options in IBM Storage Scale native REST API
    • Base64-encoded fields in IBM Storage Scale native REST API
    • Update masks in IBM Storage Scale native REST API
    • List of IBM Storage Scale native REST API endpoints
    • Limitations of IBM Storage Scale native REST API
  • Introduction to transparent cloud tiering (discontinued)
    • How transparent cloud tiering works
    • How cloud data sharing works
    • How Write Once Read Many (WORM) storage works
    • Supported cloud providers
    • Interoperability of transparent cloud tiering with other IBM Storage Scale features
    • Interoperability of cloud data sharing with other IBM Storage Scale features
  • Introduction to file audit logging
    • Producers in file audit logging
    • The file audit logging fileset
    • File audit logging records
    • File audit logging events
    • JSON attributes in file audit logging
    • Remotely mounted file systems in file audit logging
  • Introduction to clustered watch folder
    • Producers in clustered watch folder
    • Interaction between the clustered watch folder and the external Kafka sink
    • Clustered watch folder events
    • JSON attributes in clustered watch folder
  • Overview of call home
    • Types of call home data upload
      • Event-based uploads
      • Heartbeats feature for call home
      • Scheduled data upload
    • Inspecting call home data uploads
    • Benefits of enabling call home
    • Data privacy with call home
    • Call home monitors for PTF updates
  • IBM Storage Scale in an OpenStack cloud deployment
  • IBM Storage Scale product editions
  • IBM Storage Scale license designation
  • Capacity-based licensing
  • Dynamic pagepool
    • Dynamic pagepool limitations
  • Shared memory communications direct on Linux on Z
  • Plugins for NVIDIA Nsight Systems
  • Data tiering overview
• Planning
  • Planning for GPFS
    • Hardware requirements
    • Software requirements
    • Recoverability considerations
      • Node failure
        • Quorum
          • Node quorum
          • Node quorum with tiebreaker disks
        • Selecting quorum nodes
      • Network Shared Disk server and disk failure
      • Reduced recovery time by using Persistent Reserve
    • GPFS cluster creation considerations
      • GPFS node adapter interface names
      • Creating an IBM Storage Scale cluster
      • IBM Storage Scale cluster configuration information
      • Remote shell command
      • Remote file copy command
      • Cluster name
      • User ID domain for the cluster
      • Starting GPFS automatically
      • Cluster configuration file
    • Disk considerations
      • Network Shared Disk (NSD) creation considerations
      • IBM Storage Scale with data reduction storage devices
        • IBM Storage Scale with thin-provisioned devices
        • IBM Storage Scale with TRIM-supporting SSDs and NVMe SSDs
        • IBM Storage Scale with IBM FlashCore Modules (FCMs) drives
      • NSD server considerations
      • File system descriptor quorum
      • Preparing direct access storage devices (DASD) for NSDs
        • Preparing your environment for use of extended count key data (ECKD) devices
      • Planning for GPUDirect Storage
    • File system creation considerations
      • Device name of the file system
      • NFSv4 deny-write open lock
      • Disks for your file system
      • Deciding how the file system is mounted
      • Block size
      • atime values
      • mtime values
      • Block allocation map
      • File system authorization
      • Type of replication
      • Internal log file
      • File system replication parameters
        • Default metadata replicas
        • Maximum metadata replicas
        • Default data replicas
        • Maximum data replicas
      • Number of nodes mounting the file system
      • Windows drive letter
      • Mountpoint directory
      • Assign mount command options
      • Enabling quotas
        • Default quotas
      • Enabling DMAPI
      • Verifying disk usage
      • Changing the file system format to the latest level
      • Enabling file system features
      • Specifying whether the df command will report numbers based on quotas for the fileset
      • Specifying the maximum number of files that can be created
      • Controlling the order in which file systems are mounted
      • A sample file system creation
    • Backup considerations for using IBM Storage Protect
      • Considerations for provisioning IBM Storage Protect servers to handle backup of IBM Storage Scale file systems
      • IBM Storage Protect data storage model
      • How to identify backup and migration candidates
      • Comparison of snapshot based backups and backups from live system
      • File system and fileset backups with IBM Storage Protect
      • Considerations for using fileset backup with IBM Storage Protect
      • Considerations for backing up file systems that are managed with IBM Storage Protect for Space Management
    • Planning for quality of service for I/O operations
    • Planning for extended attributes
    • Planning for systemd
  • Planning for protocols
    • Scaling considerations
    • Authentication considerations
      • Impacts of authentication on enabling and disabling protocols
      • Authentication and ID mapping for file access
      • Deleting authentication and ID mapping
    • Planning for NFS
      • File system considerations for the NFS protocol
      • NFS tested clients
      • CES NFS limitations
    • Planning for SMB
      • SMB connections
      • SMB fail-over scenarios and upgrade
      • SMB limitations
      • SMB data migration to IBM Storage Scale
        • Prerequisites for SMB data migration
        • Setting up the IBM Storage Scale environment for capacity and performance
        • Configuring IBM Storage Scale authentication
        • Creating SMB exports
        • Accessing the source SMB server and the IBM Storage Scale file system
        • Running the Robocopy commands
        • Cleanup after migration
    • SMB best practices
      • IBM Storage Scale configuration
        • Storage planning and configuration
        • SMB Options to enable or disable interoperability
          • gpfs:leases
          • posix:locking
          • gpfs:sharemodes
        • Creating home directory exports using substitution variables
        • Sharing files and directories among SMB clients - concurrent access to files
      • Scheduling advanced functions for data management
      • Planning for fail-over scenarios and upgrade
      • Analysis of performance concerns and fine-tuning
      • Considerations for SMB clients
    • Fileset considerations for creating protocol data exports
    • Planning for S3
      • Configuration considerations for CES clusters
      • Configuration considerations for each NooBaa endpoint fork process
    • Planning for CES HDFS
  • Planning for cloud services
    • Hardware requirements for cloud services
    • Software requirements for cloud services
    • Network considerations for cloud services
    • Cluster node considerations for cloud services
    • IBM Cloud Object Storage considerations
    • Firewall recommendations for cloud services
    • Performance considerations
    • Security considerations
    • Planning for maintenance activities
    • Backup considerations for Transparent cloud tiering
    • Quota support for tiering
    • Client-assisted recalls
  • Planning for IBM Storage Scale on public clouds
    • Planning for deployment patterns on the cloud
    • Planning for resources creation
    • Preparing the installer node
    • Planning for AWS cloud
    • Planning for GCP cloud
    • Planning for Microsoft Azure cloud
    • Planning for IBM Cloud
    • Installing IBM Storage Scale in a network restricted (air gap) setup with the cloudkit
    • Other considerations
    • Configuring the IBM Storage Scale environment in the AWS Cloud
  • Planning for AFM
    • Requirements for UID and GID on the cache and home clusters
    • Recommended workerThreads on a cache cluster
    • Inode limits to set at cache and home
    • Planning for AFM gateway nodes
    • General recommendations for AFM gateway node configuration
    • General guidelines and recommendations for AFM SW and IW mode fileset
  • Planning for AFM DR
    • Requirements for UID/GID on primary and secondary clusters
    • Recommended worker1Threads on primary cluster
    • NFS setup on the secondary cluster
    • General guidelines and recommendations for AFM-DR
  • Planning for AFM to cloud object storage
    • Firewall recommendations for AFM to cloud object storage
  • Planning for IBM Storage Scale native REST API
  • Planning for performance monitoring tool
    • Performance monitoring limitations
  • Planning for UEFI secure boot on x86_64 and secure boot on Linux on Z
  • Firewall recommendations
  • Considerations for GPFS applications
  • Security-Enhanced Linux support
  • Space requirements for call home data upload
  • Shared memory communications direct planning
  • Planning for data tiering
• Installing and upgrading
  • Installing
    • Establishing and starting your IBM Storage Scale cluster
    • Installing IBM Storage Scale on Linux nodes and deploying protocols
      • Deciding whether to install IBM Storage Scale and deploy protocols manually or with the installation toolkit
      • Installation prerequisites
      • Preparing the environment on Linux nodes
      • IBM Storage Scale packaging overview
      • Preparing to install the IBM Storage Scale software on Linux nodes
        • Accepting the electronic license agreement on Linux nodes
        • Extracting the IBM Storage Scale software on Linux nodes
        • Verifying signature of IBM Storage Scale packages
        • Extracting IBM Storage Scale patches (update SLES and Red Hat Enterprise Linux RPMs or Ubuntu Linux packages)
        • Installing the IBM Storage Scale man pages on Linux nodes
        • For Linux on Z: Changing the kernel settings
      • Manually installing the IBM Storage Scale software packages on Linux nodes
        • Building the GPFS portability layer on Linux nodes
          • Using the mmbuildgpl command to build the GPFS portability layer on Linux nodes
          • Using the Autoconfig tool to build the GPFS portability layer on Linux nodes
        • Manually installing IBM Storage Scale and deploying protocols on Linux nodes
          • Installing IBM Storage Scale packages on Linux systems
          • Creating NSDs and file systems as part of installing IBM Storage Scale on Linux systems
          • Installing Cluster Export Services as part of installing IBM Storage Scale on Linux systems
          • Enabling NFS, SMB, HDFS, and S3 on Linux systems
        • Verifying the IBM Storage Scale installation on Ubuntu Linux nodes
        • Verifying the IBM Storage Scale installation on SLES and Red Hat Enterprise Linux nodes
        • Manually installing the performance monitoring tool
        • Manually installing IBM Storage Scale management GUI
          • Migrating iptables rules to nftables
          • Root privilege considerations for IBM Storage Scale management GUI
        • Manually installing IBM Storage Scale bridge for Grafana with the RPM
      • Installing IBM Storage Scale on Linux nodes with the installation toolkit
        • Overview of the installation toolkit
        • Understanding the installation toolkit options
        • Limitations of the installation toolkit
        • Mixed operating system support with the installation toolkit
        • Preparing to use the installation toolkit
        • Using the installation toolkit to perform installation tasks: Explanations and examples
          • Setting up the installer node
          • Defining the cluster topology for the installation toolkit
          • Setting configuration parameters before installation
          • Installing IBM Storage Scale and creating a cluster
          • Deploying protocols
          • Installation of performance monitoring tool using the installation toolkit
          • Logging and debugging for installation toolkit
          • Enabling and configuring file audit logging using the installation toolkit
          • Enabling and configuring call home using the installation toolkit
          • Installing IBM Storage Scale management GUI by using the installation toolkit
          • Installing IBM Storage Scale bridge for Grafana with the Installation Toolkit
        • Populating cluster definition file with current cluster state using the installation toolkit
          • Limitations of config populate option of the installation toolkit
        • Upgrading protocol nodes in an IBM Storage Scale System cluster
        • Configuration of an IBM Storage Scale stretch cluster in an export services environment: a sample use case
        • Performing additional tasks using the installation toolkit
          • Deploying protocols on an existing cluster
          • Adding nodes, NSDs, or file systems to an existing cluster
          • Enabling another protocol on an existing cluster that has protocols enabled
          • Diagnosing errors during installation, deployment, or upgrade
          • Preparing a cluster that contains ESS for adding protocols
          • Adding an IBM Storage Archive Enterprise Edition (EE) node in an IBM Storage Scale cluster
      • Protocol node IP further configuration
    • Installing IBM Storage Scale on AIX nodes
      • Creating a file to ease the AIX installation process
      • Verifying the level of prerequisite software
      • Procedure for installing GPFS on AIX nodes
        • Accepting the electronic license agreement
        • Creating the GPFS directory
        • Creating the GPFS installation table of contents file
        • Installing the GPFS man pages
        • Installing GPFS over a network
        • Verifying the GPFS installation
    • Installing IBM Storage Scale on Windows nodes
      • GPFS for Windows overview
        • GPFS support for Windows
        • GPFS limitations on Windows
        • File system name considerations
        • File name considerations
        • Case sensitivity
        • Antivirus software
        • Differences between GPFS and NTFS
        • Access control on GPFS file systems
      • Installing GPFS prerequisites
        • Configuring Windows
          • Assigning a static IP address
          • Joining an Active Directory domain
          • Disabling the Windows firewall
          • Installing the Tracefmt and Tracelog programs (optional)
        • Installing Cygwin
      • Procedure for installing GPFS on Windows nodes
      • Running GPFS commands
      • Configuring a mixed Windows and UNIX (AIX or Linux) cluster
      • Configuring the Windows HPC server
    • Installing IBM Storage Scale on public cloud by using cloudkit
      • Overview of the cloudkit
      • Overview of the cloudkit installation options
      • Deploying cloudkit
      • Limitations of cloudkit
      • Supported features of cloudkit
      • Accessing the cluster on the cloud
      • Deploying IBM Storage Scale on AWS
        • Option 1: Deploying IBM Storage Scale on a new Amazon VPC with a single Availability Zone
        • Option 2: Deploying IBM Storage Scale on a new Amazon VPC with multiple Availability Zones
        • Option 3: Deploying IBM Storage Scale on an existing Amazon VPC
        • Deploying AFM on AWS
          • Configuration best practices
          • Limitations of AFM on AWS
    • Installing transparent cloud tiering (discontinued)
      • Creating a user-defined node class for transparent cloud tiering or cloud data sharing
      • Installation steps
      • Setting up a cloud services cluster
      • Adding a cloud services node to an existing cloud services cluster
    • Installing and configuring IBM Storage Scale management API
    • Installing IBM Storage Scale native REST API
      • Manually installing IBM Storage Scale native REST API with the RPM
      • Installing IBM Storage Scale native REST API with the installation toolkit
    • Installing GPUDirect Storage for IBM Storage Scale
    • Installation of Active File Management (AFM)
    • Installing AFM Disaster Recovery
    • Installing call home
    • Installing file audit logging
      • Requirements, limitations, and support for file audit logging
      • Requirements for using file audit logging with remotely mounted file systems
    • Installing clustered watch folder
      • Requirements, limitations, and support for clustered watch folder
      • Requirements for using clustered watch folder with remotely mounted file systems
      • Manually installing clustered watch folder
    • Installing the signed kernel modules for UEFI secure boot on x86_64
    • Installing the signed kernel modules for secure boot on Linux on Z
    • Uninstalling IBM Storage Scale
      • Cleanup procedures required if reinstalling with the installation toolkit
      • Uninstalling the performance monitoring tool
      • Uninstalling the IBM Storage Scale management GUI
        • Removing nodes from management GUI-related node class
      • Permanently uninstall cloud services and clean up the environment
  • Upgrading
    • IBM Storage Scale supported upgrade paths
    • Online upgrade support for protocols and performance monitoring
    • Upgrade of IBM Storage Scale nodes
      • Upgrading IBM Storage Scale nodes that run on AIX
      • Upgrading IBM Storage Scale nodes that run on Windows
      • Upgrading IBM Storage Scale non-protocol nodes that run on Linux
      • Upgrading IBM Storage Scale protocol nodes
    • Upgrading IBM Storage Scale on cloud
      • Cluster upgrade
      • Upgrading IBM Storage Scale
    • Upgrading GPUDirect Storage
    • Upgrading AFM and AFM DR
      • Upgrading an AFM-DR system
      • Restarting replication to upgrade AFM and AFM DR
    • Upgrading object packages
    • Upgrading SMB packages
      • Upgrading the SMB package after upgrading OS
    • Upgrading NFS packages
    • Upgrading S3 packages
    • Upgrading call home
      • Call home configuration changes to be made while upgrading to IBM Storage Scale 5.0.x from IBM Storage Scale 4.2.1
      • Call home configuration changes to be made while upgrading to IBM Storage Scale 4.2.1 from IBM Storage Scale 4.2.0
      • Removing residual configuration files while upgrading to IBM Storage Scale 5.1.x
    • Upgrading the performance monitoring tool
      • Manually upgrading the performance monitoring tool
        • Upgrading the performance monitoring packages after upgrading Ubuntu OS
    • Upgrading signed kernel modules for UEFI secure boot on x86_64 and Linux on Z
    • Manually upgrading pmswift
    • Manually upgrading the IBM Storage Scale management GUI
    • Upgrading transparent cloud tiering (discontinued)
      • Upgrading to Transparent cloud tiering 1.1.2 from Transparent cloud tiering 1.1.0 or 1.1.1
      • Upgrading to cloud services 1.1.2.1 from 1.1.2
      • Upgrading to cloud services 1.1.3 from 1.1.2
      • Upgrading to cloud services 1.1.3 from 1.1.0 and 1.1.1
      • Upgrading to cloud services 1.1.4 from 1.1.2.x
      • Upgrading to cloud services 1.1.4 from 1.1.3
      • Upgrading to cloud services 1.1.5 from 1.1.4
      • Upgrading to cloud services 1.1.6 from 1.1.5
      • Upgrading the cloud services sensors
    • Upgrading to IBM Cloud Object Storage software level 3.7.2 and above
    • Upgrade paths and commands for file audit logging and clustered watch folder
    • Upgrading IBM Storage Scale components with the installation toolkit
      • Upgrade process flow
      • Performing online upgrade by using the installation toolkit
      • Performing offline upgrade or excluding nodes from upgrade by using installation toolkit
      • Upgrade rerun after an upgrade failure
      • Upgrading Swift Object packages to IBM Storage Scale 5.1.8 or earlier by using the installation toolkit
      • Upgrading IBM Storage Scale on IBM Storage Archive Enterprise Edition (EE) nodes by using the installation toolkit
    • Upgrading IBM Storage Scale native REST API
    • Protocol authentication configuration changes during upgrade
    • Changing the IBM Storage Scale product edition
      • Changing the product edition by using the installation toolkit
      • Changing the product edition manually, one node at a time
      • Changing the product edition manually, all nodes at the same time
      • Changing Express Edition to Standard Edition
    • Completing the upgrade to a new level of IBM Storage Scale
    • Reverting to the previous level of IBM Storage Scale
      • Reverting to a previous level of GPFS when you have not issued mmchconfig release=LATEST
      • Reverting to a previous level of GPFS when you have issued mmchconfig release=LATEST
    • Coexistence considerations
    • Compatibility considerations
    • Considerations for IBM Storage Protect for Space Management
    • Applying maintenance to your IBM Storage Scale system
    • Guidance for upgrading the operating system on IBM Storage Scale nodes
      • Guidance for Red Hat Enterprise Linux 8.x on IBM Storage Scale nodes
      • Instructions for removing object protocol packages when upgrading protocol nodes to Red Hat Enterprise Linux 8.x
    • Servicing IBM Storage Scale protocol nodes
    • Offline upgrade with complete cluster shutdown
• Configuring
  • Configuring the GPFS cluster
    • Creating your GPFS cluster
    • Displaying cluster configuration information
    • Adding nodes to a GPFS cluster
    • Deleting nodes from a GPFS cluster
    • Changing the GPFS cluster configuration data
    • Security mode
      • Setting the security mode for internode communications in a cluster
    • Minimum release level of a cluster
    • Running IBM Storage Scale commands without remote root login
      • Configuring sudo
      • Configuring the cluster to use sudo wrapper scripts
      • Configuring IBM Storage Scale GUI to use sudo wrapper
      • Configuring a cluster to stop using sudo wrapper scripts
      • Root-level processes that call administration commands directly
    • Cluster quorum with quorum nodes
    • Cluster quorum with quorum nodes and tiebreaker disks
    • Displaying and changing the file system manager node
    • Starting and stopping GPFS
      • Starting or stopping GPFS daemon on a node by using GUI
    • Shutting down an IBM Storage Scale cluster
    • Configuring cluster configuration repository
      • Enabling CCR
      • CCR directory structure and recommendations for configuring CCR
      • Disaster recovery scenarios for CCR
      • Limitations of CCR
  • Configuring GPUDirect Storage for IBM Storage Scale
  • Configuring the CES and protocols
    • Configuring Cluster Export Services
      • Setting up Cluster Export Services shared root file system
      • Configuring Cluster Export Services nodes
      • Configuring CES protocol service IP addresses
      • CES IP aliasing to network adapters on protocol nodes
      • Deploying Cluster Export Services packages on existing IBM Storage Scale nodes
      • Verifying the final CES configurations
    • Creating and configuring file systems and filesets for exports
    • Configuring with the installation toolkit
    • Deleting a Cluster Export Services node from an IBM Storage Scale cluster
    • Setting up Cluster Export Services groups in an IBM Storage Scale cluster
    • Setting up self-signed SSL/TLS certificates for secure communication between the S3 client and the S3 service
    • Configuring syslog-ng for the S3 protocol
    • Configuring first-time data capture for CES NFS
      • Configuring NFS statistics collection
      • Configuring debug data collection for NFS hung scenarios
  • Configuring and tuning your system for GPFS
    • General system configuration and tuning considerations
      • Clock synchronization
      • GPFS administration security
      • Cache usage
        • The GPFS token system's effect on cache settings
      • Access patterns
      • Aggregate network interfaces
      • Swap space
    • Linux configuration and tuning considerations
      • updatedb considerations
      • Memory considerations
      • GPFS helper threads
      • Communications I/O
      • Disk I/O
    • AIX configuration and tuning considerations
      • GPFS use with Oracle
  • Parameters for performance tuning and optimization
    • Recommendations for tuning maxTcpConnsPerNodeConn parameter
    • Tuning parameters change history
  • Ensuring high availability of the GUI service
  • Configuring and tuning your system for cloud services
    • Configuration command execution matrix
    • Designating the cloud services nodes
    • Starting up the cloud services software
    • Managing a cloud storage account
      • Amazon S3
      • Swift3 account
      • IBM Cloud Object Storage
      • Microsoft Azure
    • Defining cloud storage access points (CSAP)
    • Creating cloud services
    • Configuring cloud services with SKLM (optional)
    • Binding your file system or fileset to the Cloud service by creating a container pair set
    • Backing up the cloud services database to the cloud
    • Backing up the cloud services configuration
    • Configuring the maintenance windows
    • Enabling a policy for cloud data sharing export service
    • Tuning cloud services parameters
    • Integrating cloud services metrics with the performance monitoring tool
      • GPFS-based configuration
      • File-based configuration
    • Setting up transparent cloud tiering service on a remotely mounted client
    • Deploying WORM solutions
      • Creating immutable filesets and files
      • Setting up transparent cloud tiering for WORM solutions
        • Setting up a private key and creating locked vaults
          • Setting up a private key and a private certificate
          • Creating locked vaults
        • Configuring Transparent cloud tiering with certificate-based authentication and locked vaults
        • Rotating client key or revoking old certificate
        • Updating transparent cloud tiering with a new private key and certificate
  • Configuring IBM Power Systems for IBM Storage Scale
    • Tuning the operating system
    • Logical partitioning (LPAR) hardware allocations for NUMA-based Power servers
      • Running Dynamic Platform Optimizer (DPO) to optimize an LPAR
    • Configuring INT_LOG_MAX_PAYLOAD_SIZE Parameter
  • Configuring file audit logging
    • Enabling file audit logging on a file system
    • Disabling file audit logging on a file system
    • Enabling or skipping filesets with file audit logging
    • Actions that the mmaudit command takes to enable file audit logging
    • Actions that the mmaudit command takes to disable file audit logging
    • Enabling and disabling file audit logging using the GUI
    • Viewing file systems that have file audit logging enabled with the GUI
    • Enabling file audit logging on an owning cluster for a file system that is remotely mounted
  • Configuring clustered watch folder
    • Enabling a clustered watch
    • Disabling a clustered watch
    • Configuration of an external Kafka sink in the IBM Storage Scale cluster
    • Actions that the mmwatch command takes to enable a clustered watch
    • Actions that the mmwatch command takes to disable a clustered watch
  • Configuring the cloudkit
    • Configuring your AWS cloud account
      • Optimal setup considerations
    • Configuring your GCP cloud account
    • Configuring your Microsoft Azure cloud account
    • Configuring your IBM Cloud account
    • Configuring permissions to use cloudkit on public clouds
    • Configuring IAM permissions
  • Configuring the IBM Storage Scale environment in the AWS Cloud
  • Configuring Active File Management
    • Configuration parameters for AFM, AFM-DR, and AFM to cloud object storage
    • Configuration changes in an existing AFM relationship
      • Adding gateway nodes to the cache cluster
      • The NFS server at the home cluster
    • Enabling AFM Network File System version 4
    • Mapping IDs with the AFM Network File System version 4
    • Enabling or disabling the fast remove for large directories deletion
    • Configuring writable snapshots
      • Creating a writable snapshot
      • Using writable snapshots for the disaster recovery testing
    • Enabling the failover mapping
    • Configuring asynchronous auto prefetch for AFM NFS-based filesets
    • Configuring AFM with nonstandard NFS ports
  • Configuring AFM-based DR
    • Changing configuration in an existing AFM DR relationship
      • Changing NFS server on secondary
      • Changing gateway nodes on primary
  • Configuring AFM to cloud object storage
    • Configuring an AFM to cloud object storage fileset with Microsoft Azure Blob
    • Configuring AFM to cloud object storage for Azure Blob storage by using MinIO as S3 gateway
    • Configuring AFM to cloud object storage fileset by using use-keys and STS token
    • Configuring AFM to cloud object storage to use Google cloud storage
    • Configuring the replication at the file system level by using the manual updates mode of the AFM to cloud object storage
      • Configuring a new file system for the replication by using the manual updates mode of the AFM to cloud object storage
      • Configuring an existing file system for the replication by using the manual updates mode of the AFM to cloud object storage
    • Configuring the multi-site replication of AFM to cloud object storage
    • Configuring asynchronous auto prefetch
    • Configuring SQS-based asynchronous notifications
    • Configuring asynchronous notifications with Amazon SQS for watch folder events
    • Configuring an AFM to cloud object storage fileset with S3 Glacier storage classes
    • Configuring AFM filesets with custom SSL certificates
  • Configuring IBM Storage Scale native REST API
    • Changing the cluster configuration data with IBM Storage Scale native REST API
    • Node identities
    • Coexistence with mm-commands CLI
    • SSH and SCP replacements with IBM Storage Scale native REST API
  • Tuning for Kernel NFS backend on AFM and AFM DR
    • Tuning the gateway node on the NFS client
    • Tuning on both the NFS client (gateway) and the NFS server (the home/secondary cluster)
    • Tuning the NFS server on the home/secondary cluster or the NFS server
  • Configuring call home
    • Configuring call home to enable manual and automated data upload
      • Configuring the call home groups manually
      • Configuring the call home groups automatically
    • Configuring call home using GUI
    • Configuring custom server for Call Home
    • Call home configuration examples
    • Use cases for detecting system changes by using the mmcallhome command
  • Integrating IBM Storage Scale Cinder driver with Red Hat OpenStack Platform 16.1
    • Configuring IBM Storage Scale cluster to enable Cinder driver with RHOSP
    • Deploying IBM Storage Scale Cinder backend configuration in RHOSP
    • Limitations of integrating IBM Storage Scale Cinder driver with RHOSP
    • Triple-O heat template environment parameters
    • Sample IBM Storage Scale Cinder configuration YAML file
  • Configuring multi-rail over TCP (MROT)
  • Dynamic pagepool configuration
  • Configuring shared memory communications direct
    • Verifying SMC-D requirements on each node
  • Signing a TLS certificate for mmsysmon
  • Configuring fileset multitenancy by using the GUI
  • Configuring the plugins for NVIDIA Nsight Systems
  • Configuring data tiering
    • Configuring storage pools for data tiering
    • Configuring data tiering using mmchattr command
    • Configuring data tiering using policy rules
• Administering
  • Performing GPFS administration tasks
    • Requirements for administering a GPFS file system
      • The adminMode configuration attribute
    • Common GPFS command principles
      • Specifying nodes as input to GPFS commands
      • Stanza files
      • Listing active IBM Storage Scale commands
    • Determining how long mmrestripefs takes to complete
  • Performing parallel copy with mmxcp command
  • Managing shared memory communications direct
  • Protecting file data: IBM Storage Scale safeguarded copy
  • Verifying network operation with the mmnetverify command
  • Managing file systems
    • Mounting a file system
      • Mounting a file system on multiple nodes
      • Mount options specific to IBM Storage Scale
      • Mounting a file system through GUI
      • Changing a file system mount point on protocol nodes
    • Unmounting a file system
      • Unmounting a file system on multiple nodes
      • Unmounting a file system through GUI
    • Deleting a file system
    • Determining which nodes have a file system mounted
    • Checking and repairing a file system
    • Dynamic validation of descriptors on disk
    • File system maintenance mode
    • Listing file system attributes
    • Modifying file system attributes
    • Querying and changing file replication attributes
      • Querying file replication
      • Changing file replication attributes
    • Using Direct I/O on a file in a GPFS file system
    • File compression
    • Restriping a GPFS file system
    • Querying file system space
    • Querying and reducing file system fragmentation
      • Querying file system fragmentation
      • Reducing file system fragmentation
    • Protecting data in a file system using backup
      • Protecting data in a file system using the mmbackup command
        • Protecting data in a fileset using the mmbackup command
        • IBM Storage Protect requirements
        • Migrating to mmbackup from IBM Storage Protect-interface–based backup
        • Tuning backups with the mmbackup command
        • MMBACKUP_PROGRESS_CALLOUT environment variable
      • Backing up a file system using the GPFS policy engine
      • Backing up file system configuration information
      • Using APIs to develop backup applications
    • Scale Out Backup and Restore (SOBAR)
    • Scheduling backups using IBM Storage Protect scheduler
    • Configuration reference for using IBM Storage Protect with IBM Storage Scale
      • Options in the IBM Storage Protect configuration file dsm.sys
      • Options in the IBM Storage Protect configuration file dsm.opt
      • Base IBM Storage Protect client configuration files for IBM Storage Scale usage
    • Restoring a subset of files or directories from a local file system snapshot
    • Restoring a subset of files or directories from a local fileset snapshot
    • Restoring a subset of files or directories from local snapshots using the sample script
    • Creating and managing file systems by using GUI
  • File system format changes between versions of IBM Storage Scale
  • Managing disks
    • Displaying disks in a GPFS cluster
    • Adding disks to a file system
    • Deleting disks from a file system
    • Replacing disks in a GPFS file system
    • Additional considerations for managing disks
    • Displaying GPFS disk states
      • Disk availability
      • Disk status
    • Changing GPFS disk states and parameters
    • Changing your NSD configuration
    • Changing NSD server usage and failback
    • NSD servers: Periodic checks for I/O problems
    • Enabling and disabling Persistent Reserve
  • Managing protocol services
    • Configuring and enabling SMB, NFS, and S3 protocol services
    • Support of vfs_fruit for the SMB protocol
    • Configuring and enabling the Swift Object protocol service
    • Disabling protocol services
  • Managing protocol user authentication
    • Setting up authentication servers to configure protocol user access
      • Integrating with AD server
      • Integrating with LDAP server
        • Setting up LDAP server prerequisites
          • LDAP bind user requirements
            • OpenLDAP server ACLs
            • IBM Storage Protect Directory Server ACLs
        • Updating LDAP user information with Samba attributes
    • Configuring authentication and ID mapping for file access
      • Prerequisites
        • Prerequisite for configuring Kerberos-based SMB access
        • Authentication considerations for NFSv4 based access
        • Prerequisites for configuring Kerberos based NFS access
      • Configuring file authentication by using CLI
        • Configuring AD-based authentication for file access
          • Setting up a range of ID maps that can be allotted to the users
          • Considerations for changing the ID map range and range size
          • Prerequisite for configuring AD-based authentication for file access
          • Configuring AD-based authentication with automatic ID mapping
          • Configuring AD-based authentication with RFC2307 ID mapping
            • AD authentication with RFC2307 ID mapping for picking UNIX primary group
            • AD authentication with RFC2307 ID mapping for overlapping unixmap domain ranges
            • Best practices for configuring AD with RFC2307 as the authentication method
            • Limitations of the mmuserauth service create command while configuring AD with RFC2307
          • Configuring AD-based authentication with LDAP ID mapping
        • Configuring LDAP-based authentication for file access
          • Configuring LDAP with TLS for file access
          • Configuring LDAP with Kerberos for file access
          • Configuring LDAP with TLS and Kerberos for file access
          • Configuring LDAP without TLS and Kerberos for file access
        • Configuring NIS-based authentication
      • Configuring file authentication by using GUI
    • Configuring authentication for Swift Object access
    • Managing user-defined authentication
    • Listing the authentication configuration
    • Verifying the authentication services configured in the system
    • Modifying the authentication method
    • Deleting the authentication and the ID-mapping configuration
    • Authentication limitations
  • Managing protocol data exports
    • Managing SMB shares
      • Creating SMB share
        • Creating an SMB share by using GUI
      • Changing SMB share configuration
      • Creating SMB share ACLs
      • Removing SMB shares
      • Listing SMB shares
      • Managing SMB shares using MMC
        • Connecting to SMB shares by using MMC
        • Creating SMB shares using MMC
        • Modifying or removing SMB shares using MMC
        • Managing ACLs of SMB shares using MMC
        • Modifying offline settings of SMB shares using MMC
        • Viewing active connections to SMB shares using MMC
        • Disconnecting active connections to SMB shares using MMC
        • Viewing open files in SMB shares using MMC
        • Viewing the number of locks on files in SMB shares using MMC
    • Managing NFS exports
      • Creating NFS exports
        • Creating an NFS export by using GUI
      • Changing NFS export configuration
      • Removing NFS exports
      • Listing NFS exports
      • GUI navigation for NFS exports
      • Making bulk changes to NFS exports
    • Multiprotocol data access considerations
  • Managing S3 protocol service
    • Managing S3 accounts and buckets
      • Managing S3 accounts
        • Managing an anonymous account
      • Managing S3 buckets using AWS CLI
      • Managing S3 buckets using the mms3 command
      • Managing S3 public buckets
      • Managing S3 bucket notifications
        • Managing S3 notification connections
      • Managing the S3 bucket lifecycle
      • S3 objects API
      • S3 buckets API
    • Backing up the S3 configuration data
    • Restoring the S3 configuration data
    • Multiprotocol data access
    • Managing S3 bucket policies
    • Creating and managing IAM users for S3 access
    • Managing S3 configuration through GUI
      • Monitoring S3 performance through GUI
      • Viewing S3 data through GUI
      • Managing S3 buckets and accounts through GUI
  • Managing Swift Object storage
    • Understanding and managing Object services
    • Understanding the mapping of OpenStack commands to IBM Storage Scale administrator commands
    • Changing Object configuration values
    • How to change the object base configuration to enable S3 API
    • Configuring OpenStack EC2 credentials
    • How to manage the OpenStack S3 API
    • Managing object capabilities
    • Managing object versioning
      • Enabling object versioning
      • Disabling object versioning
      • Creating a version of an object: Example
    • Mapping of storage policies to filesets
    • Administering storage policies for Swift Object storage
      • Creating storage policy for object compression
      • Creating storage policy for object encryption
    • Adding a region in a multi-region Swift Object deployment
    • Administering a multi-region object deployment environment
    • Unified file and Swift Object access in IBM Storage Scale
      • Enabling object access to existing filesets
      • Identity management modes for unified file and Swift Object access
        • local_mode - separate identity between object and file
        • unified_mode - shared identity between object and file
      • Authentication in unified file and object access
      • Validating shared authentication ID mapping
      • The objectizer process
      • File path in unified file and Swift Object access
        • Determining the POSIX path of a unified file and object access enabled fileset
      • Administering unified file and object access
        • Enabling the file-access object capability
        • Starting and stopping the ibmobjectizer service
        • Setting up the objectizer service interval
        • Enabling and disabling QOS
        • Configuring authentication and setting identity management modes for unified file and object access
        • Creating or using a unified file and object access storage policy
        • Associating containers with a unified file and object access storage policy
        • Creating exports on a container that is associated with a unified file and object access storage policy
        • Enabling object access for selected files
        • Example scenario - administering unified file and object access
      • In-place analytics using unified file and object access
      • Limitations of unified file and object access
      • Constraints applicable to unified file and object access
      • Data ingestion examples
      • curl commands for unified file and object access related user tasks
    • Configuration files for IBM Storage Scale for object storage
    • Backing up and restoring object storage
      • Backing up the object storage
      • Restoring the object storage
        • Improving recovery time
    • Configuration of object for isolated node and network groups
    • Enabling the object heatmap policy
  • Managing GPFS quotas
    • Enabling and disabling GPFS quota management
    • Default quotas
    • Implications of quotas for different protocols
    • Explicitly establishing and changing quotas
    • Setting quotas for users on a per-project basis
    • Checking quotas
    • Listing quotas
    • Activating quota limit checking
    • Deactivating quota limit checking
    • Changing the scope of quota limit checking
    • Creating file system quota reports
    • Restoring quota files
    • Managing quota by using GUI
  • Managing GUI users
    • Create GUI users and assign user permissions
    • Defining a password policy for GUI users
    • Changing or expiring password of GUI user
    • Configuring external authentication for GUI users
    • Configuring multi-factor authentication for GUI users
      • Configuring GUI details in IBM Security Verify for multi-factor authentication
  • Managing GPFS access control lists
    • Traditional GPFS ACL administration
      • Setting traditional GPFS access control lists
      • Displaying traditional GPFS access control lists
      • Applying an existing traditional GPFS access control list
      • Changing traditional GPFS access control lists
      • Deleting traditional GPFS access control lists
    • NFSv4 ACL administration
      • NFSv4 ACL syntax
        • ACL entries DELETE and DELETE_CHILD
      • NFSv4 ACL translation
      • Setting NFSv4 access control lists
      • Displaying NFSv4 access control lists
      • Applying an existing NFSv4 access control list
      • Changing NFSv4 access control lists
      • Deleting NFSv4 access control lists
      • Considerations when using GPFS with NFSv4 ACLs
      • Exceptions and limitations to NFSv4 ACLs support
        • Linux ACLs and extended attributes
    • Authorizing protocol users
      • Authorizing file protocol users
        • ACL inheritance
        • ACL best practices
        • ACL permissions that are required to work on files and directories
        • Working with ACLs
        • Configuring file system ACL by using GUI
      • Authorizing object users
        • Configuring container ACLs to authorize object data users
          • Creating containers
          • Creating read ACLs to authorize object users
          • Creating write ACLs to authorize object users
      • Authorization limitations
  • Native NFS and GPFS
    • Exporting a GPFS file system using NFS
      • Export considerations
        • Linux export considerations
        • AIX export considerations
    • NFS usage of GPFS cache
    • Synchronous writing using NFS
    • Unmounting a file system after NFS export
    • NFS automount considerations
    • Clustered NFS and GPFS on Linux
  • Accessing a remote GPFS file system
    • Remote user access to a GPFS file system
    • Using NFS/SMB protocol over remote cluster mounts
      • Configuring protocols on a separate cluster
      • Managing multi-cluster protocol environments
      • Upgrading multi-cluster environments
      • Limitations of protocols on remotely mounted file systems
    • S3 protocol over remote cluster mounts
    • Mounting a remote GPFS file system
      • Fileset access control for remote clusters
    • Managing remote access to a GPFS file system
    • Attaching direct storage on IBM Z
    • Using remote access with multiple network definitions
    • Using multiple security levels for remote access
    • Changing security keys with remote access
    • NIST compliance
    • Important information about remote access
  • Information lifecycle management for IBM Storage Scale
    • Storage pools
      • Internal storage pools
        • The system storage pool
        • The system.log storage pool
        • Managing storage pools
          • Creating storage pools
          • Changing the storage pool assignment of a disk
          • Changing the storage pool assignment of a file
          • Deleting storage pools
          • Listing the storage pools of a file system
          • Listing the storage pool of a file
          • Listing disks and associated statistics
          • Rebalancing files in a storage pool
          • Using replication in a storage pool
      • External storage pools
    • Policies for automating file management
      • Overview of policies
      • Policy rules
        • Policy rules: Syntax
        • Policy rules: Terms
        • SQL expressions for policy rules
          • File attributes in SQL expressions
          • Using built-in functions
            • Extended attribute functions
            • String functions
            • Numerical functions
            • Date and time functions
            • Miscellaneous SQL functions
      • The mmapplypolicy command and policy rules
        • Phase one: Selecting candidate files
        • Phase two: Choosing and scheduling files
        • Phase three: Migrating and deleting files
      • Policy rules: Examples and tips
        • Using macro processing utilities with policy rules
      • Managing policies
        • Creating a policy
        • Installing a policy
        • Changing the active policy
        • Listing policies
        • Validating policies
        • Deleting policies
        • Using thresholds to migrate data between pools
        • Improving performance with the --sort-command parameter
        • Improving performance in very large file systems
      • Working with external storage pools
        • Defining external pools
        • User-provided program for managing external pools
        • File list format
        • Record format
        • Migrate and recall with external pools
        • Pre-migrating files with external storage pools
        • Purging files from external storage pools
      • Backup and restore with storage pools
        • Working with external lists
      • ILM for snapshots
    • User storage pools
    • File heat: Tracking file access temperature
    • Filesets
      • Fileset namespace
      • Filesets and quotas
      • Filesets and storage pools
      • Filesets and global snapshots
      • Fileset-level snapshots
      • Filesets and backup
      • Managing filesets
        • Creating a fileset
          • Creating a fileset by using GUI
        • Deleting a fileset
        • Linking a fileset
        • Unlinking a fileset
        • Changing fileset attributes
        • Displaying fileset information
    • Immutability and appendOnly features
    • Creating and applying ILM policy by using GUI
    • Modifying active ILM policy by using GUI
  • Creating and maintaining snapshots of file systems
    • Creating a snapshot
      • Creating a snapshot by using GUI
    • Listing snapshots
    • Restoring a file system from a snapshot
    • Reading a snapshot with the policy engine
    • Linking to a snapshot
    • Deleting a snapshot
    • Managing snapshots using IBM Storage Scale GUI
  • Creating and managing file clones
    • Creating file clones
    • Listing file clones
    • Deleting file clones
    • Splitting file clones from clone parents
    • File clones and disk space management
    • File clones and snapshots
    • File clones and policy files
  • Scale Out Backup and Restore (SOBAR)
    • Backup procedure with SOBAR
    • Restore procedure with SOBAR
  • Data Mirroring and Replication
    • General considerations for using storage replication with GPFS
    • Data integrity and the use of consistency groups
    • Handling multiple versions of IBM Storage Scale data
    • Continuous Replication of IBM Storage Scale data
      • Synchronous mirroring with GPFS replication
        • Setting up IBM Storage Scale synchronous replication
        • Steps to take after a disaster when using IBM Storage Scale replication
          • Failover to the surviving site
          • Failback procedures
            • Failback with temporary loss and no configuration changes
            • Failback with temporary loss using the Clustered Configuration Repository (CCR) configuration mechanism
            • Failback with permanent loss
      • Synchronous mirroring utilizing storage based replication
        • An active-active IBM Storage Scale cluster
          • Setting up an active-active GPFS configuration
          • Failover to the recovery site and subsequent failback for an active/active configuration
        • An active-passive IBM Storage Scale cluster
          • Setting up an active-passive IBM Storage Scale configuration
          • Failover to the recovery site and subsequent failback for an active-passive configuration
      • Point-in-time copy of IBM Storage Scale data
        • Using consistency groups for Point in Time Copy
        • Using file-system-level suspension for Point in Time Copy
  • Implementing a clustered NFS environment on Linux
    • NFS monitoring
    • NFS failover
    • NFS locking and load balancing
    • CNFS network setup
    • CNFS setup
    • CNFS administration
  • Implementing Cluster Export Services
    • CES features
      • CES cluster setup
      • Suspending or resuming CES nodes by using GUI
      • CES network configuration
      • CES address failover and distribution policies
      • CES protocol management
      • CES management and administration
    • CES NFS support
    • CES SMB support
    • CES HDFS support
    • Migration of CNFS clusters to CES clusters
  • Identity management on Windows / RFC 2307 attributes
    • Auto-generated ID mappings
    • Configuring ID mappings in Active Directory Users and Computers for Windows Server 2016 (and subsequent) versions
    • Installing Windows IDMU
    • Configuring ID mappings in IDMU
  • Protocols cluster disaster recovery
    • Protocols cluster disaster recovery limitations and prerequisites
    • Example setup for protocols disaster recovery
    • Setting up gateway nodes to ensure cluster communication during failover
    • Protocols and cluster configuration data required for disaster recovery
      • Swift Object data required for protocols cluster DR
      • SMB data required for protocols cluster DR
        • Failover steps for the SMB protocol
        • Failback or restore steps for the SMB protocol
      • NFS data required for protocols cluster DR
        • Failover steps for the NFS protocol
        • Failback or restore steps for the NFS protocol
      • Authentication related data required for protocols cluster DR
        • Failover steps for authentication data
        • Failback steps for authentication data
      • CES data required for protocols cluster DR
        • Failover steps for CES
        • Failback or recovery steps for CES
  • File Placement Optimizer
    • Distributing data across a cluster
    • FPO pool file placement and AFM
    • Configuring FPO
      • Configuring IBM Storage Scale clusters
        • Create the IBM Storage Scale cluster
        • Apply IBM Storage Scale license
        • Create IBM Storage Scale Network Shared Disks (NSD)
        • Apply IBM Storage Scale FPO configuration changes
        • Create the IBM Storage Scale file system and pools
        • Create IBM Storage Scale Data Placement Policy
        • Create filesets for MapReduce intermediate and temporary data
        • Set file system permissions
      • Basic Configuration Recommendations
        • Operating system configuration and tuning
        • IBM Storage Scale configuration and tuning
        • Optional IBM Storage Scale configuration and tuning
      • Configuration and tuning of Hadoop workloads
      • Configuration and tuning of database workloads
      • Configuring and tuning SparkWorkloads
    • Ingesting data into IBM Storage Scale clusters
    • Exporting data out of IBM Storage Scale clusters
    • Upgrading FPO
    • Auto recovery
      • Failure and recovery
        • diskFailure Event
        • nodeJoin Event
        • nodeLeave Event
      • QoS support for autorecovery
    • Restrictions
  • Encryption
    • Encryption keys
    • Encryption policies
    • Encryption policy rules
    • Preparation for encryption
    • Establishing an encryption-enabled environment
      • Simplified setup: Using SKLM with a self-signed certificate
      • Setup using HashiCorp Vault KMIP Secrets Engine
      • Simplified setup: Using SKLM with a certificate chain
      • Simplified setup: Valid and invalid configurations
      • Simplified setup: Accessing a remote file system
      • Accessing an encrypted remote file system using keys from Vault KMIP Secrets Engine
      • Simplified setup: Doing other tasks
      • Regular setup: Using SKLM with a self-signed certificate
      • Regular setup: Using SKLM with a certificate chain
      • Regular setup: Accessing a remote file system
      • Converting encryption configuration from regular setup to simplified setup
      • Configuring encryption with SKLM 2.7 or later
      • Configuring encryption with the Thales CipherTrust Manager key server by using a local certificate authority
      • Configuring encryption with the Thales CipherTrust Manager key server by using an external certificate authority
    • Certificate expiration warnings
    • Renewing client and server certificate
      • Certificate expiration dates and error messages
      • Renewing expired server certificates
      • Renewing expired client certificates
    • Encryption hints
    • Secure deletion
    • Key rotation: Replacing master encryption keys
    • Encryption and standards compliance
      • Encryption and FIPS 140 certification
      • Encryption and NIST SP800-131A compliance
    • Encryption in a multi-cluster environment
    • Encryption in a Disaster Recovery environment
    • Encryption and backup/restore
    • Encryption and snapshots
    • Encryption and a local read-only cache (LROC) device
    • Encryption and external pools
    • Encryption requirements and limitations
    • Configuring separate encryption keys for each remote cluster
  • Managing certificates to secure communications between GUI web server and web browsers
  • Securing protocol data
    • Planning for protocol data security
    • Configuring protocol data security
    • Data security limitations
  • Cloud services: Transparent cloud tiering and cloud data sharing
    • Administering files for transparent cloud tiering
      • Applying a policy on a transparent cloud tiering node
      • Migrating files to the cloud storage tier
      • Pre-migrating files to the cloud storage tier
      • Recalling files from the cloud storage tier
      • Reconciling files between IBM Storage Scale file system and cloud storage tier
      • Cleaning up files transferred to the cloud storage tier
      • Deleting cloud objects
      • Managing reversioned files
      • Listing files migrated to the cloud storage tier
      • Restoring files
      • Restoring Cloud services configuration
      • Checking the cloud services database integrity
      • Manual recovery of Transparent cloud tiering database
      • Scale out backup and restore (SOBAR) for cloud services
        • Overview
        • Prerequisites for using SOBAR
          • Prerequisites for the primary site
          • Prerequisites for the recovery site
        • Procedure for backup
        • Procedure for restore
        • Description of file names and parameters used in the example
    • cloud data sharing
      • Listing files exported to the cloud
      • Importing cloud objects exported through an old version of cloud data sharing
    • Administering transparent cloud tiering and cloud data sharing services
      • Stopping cloud services software
      • Monitoring the health of cloud services software
      • Checking the cloud services version
    • Known limitations of cloud services
  • Managing file audit logging
    • Managing the list of monitored events
    • Manage and list currently enabled audits of all types
  • RDMA tuning
  • Configuring Mellanox Memory Translation Table (MTT) for GPFS RDMA VERBS Operation
  • Administering cloudkit
    • Mounting and unmounting an IBM Storage Scale file system on compute nodes
    • Editing or scaling out an IBM Storage Scale cloud cluster
    • Enabling IBM Storage Scale GUI access by using JumpHost
      • Accessing IBM Storage Scale GUI in AWS
    • Enabling and disabling repository access
    • Enabling CES and protocols
    • Enabling AFM caching
    • Creating custom AMI
    • Accessing IBM Storage Scale GUI in AWS
    • Cleaning up the cluster and the stack
  • Administering AFM
    • Migrating data by using active file management
      • Data migration to an AFM fileset by using the NFS protocol
        • Running recursive prefetch on the AFM cache RO-mode fileset (new system)
        • Planning the cutover or conversion of fileset on the new system
        • Migrating application from an old system to a new system
      • Data migration to an AFM fileset by using GPFS/NSD protocol
        • Running recursive prefetch on the AFM cache RO-mode fileset (new system)
        • Planning the cutover or conversion of fileset on the new system
        • Migrating application from an old system to a new system
      • Data migration to an AFM file system by using NFS protocol
        • Running recursive prefetch on the AFM cache RO-mode fileset system (new system)
        • Planning the cutover or conversion of file system on the new system
        • Migrating application from an old system to a new system
      • Data migration to an AFM file system by using GPFS/NSD protocol
        • Running recursive prefetch on the AFM cache RO-mode fileset system (new system)
        • Planning the cutover or conversion of file system on the new system
        • Migrating application from an old system to a new system
    • Creating an AFM relationship by using the NFS protocol
      • Setting up the home cluster
      • Setting up the cache cluster
      • Example of creating an AFM relationship by using the NFS protocol
      • Example of AFM support for Kerberos-enabled NFS protocol exports
    • Creating an AFM relationship by using GPFS protocol
      • Setting up the home cluster
      • Setting up the cache cluster
      • Example of creating an AFM relationship by using the GPFS protocol
    • Checking the synchronization status of an AFM fileset
    • Pre-populating metadata by using the out-of-band prefetch
    • AFM to cloud object storage policy-based deletion for the manual updates mode
    • Improving write and remove operations efficiency in the manual updates mode
    • Evicting metadata or inode automatically from AFM filesets
    • Creating and managing writable snapshots
    • Synchronizing AFM cache by using outband updates
  • Administering AFM through GUI
    • Monitoring options available in the Active File Management page
    • Managing AFM filesets
  • Administering AFM DR
    • Enabling integrated archive manager modes on AFM-DR filesets
    • Creating an AFM-based DR relationship
    • Converting GPFS filesets to AFM DR
    • Converting AFM relationship to AFM DR
  • Administering AFM to cloud object storage
    • Creating a fileset by using proxy endpoints
    • Managing AFM to cloud object storage keys
    • Creating AFM to cloud object storage relation in different modes
    • Evicting files or objects data
    • Evicting files or objects metadata
    • Evicting data or objects by using the manual updates mode of the AFM to cloud object storage
    • Mapping a directory to a cloud object storage bucket
    • Uploading objects
    • Downloading objects
      • Downloading objects by using the outband method
    • Converting IBM Storage Scale independent fileset to manual update mode
    • Uploading and downloading files from an MU mode fileset
    • AFM to COS upload and download statistics
    • Synchronization of AFM to cloud object storage data to the bucket by using prefix
    • Migration of a transparent cloud tiering-enabled IBM Storage Scale fileset or file system to an AFM to cloud object storage fileset in the manual update mode
      • Promoting a TCT-enabled fileset to an AFM to cloud object storage fileset in the manual update mode
      • Promoting a TCT-enabled file system to an AFM to cloud object storage fileset in the manual update mode
    • Converting an AFM to cloud object storage fileset supporting Azure Blob storage by using a MinIO gateway to native Azure Blob storage
    • Specifying a Glacier storage class
  • Migrating an existing IBM Storage Scale cluster management to the IBM Storage Scale native REST API
  • Remote cluster support with IBM Storage Scale native REST API
  • Local read-only cache
  • Miscellaneous advanced administration topics
    • Changing IP addresses or host names of cluster nodes
    • Enabling a cluster for IPv6
    • Using multiple token servers
    • Exporting file system definitions between clusters
    • IBM Storage Scale port usage
    • IBM Storage Scale GUI port usage
    • Securing IBM Storage Scale by using a firewall
      • Firewall recommendations for the IBM Storage Scale installation
      • Firewall recommendations for internal communication among nodes
      • Firewall recommendations for protocol access
      • Firewall recommendations for IBM Storage Scale GUI
      • Firewall recommendations for IBM SKLM
      • Firewall recommendations for Performance Monitoring tool
      • Firewall considerations for Active File Management (AFM)
      • Firewall considerations for remote mounting of file systems
      • Firewall recommendations for using IBM Storage Protect with IBM Storage Scale
      • Firewall considerations for using IBM Spectrum Archive with IBM Storage Scale
      • Firewall recommendations for call home
      • Firewall recommendations for IBM Storage Scale native REST API
      • Examples of how to open firewall ports
    • Supported web browser versions and web browser settings for GUI
  • GUI limitations
• Monitoring
  • Monitoring system health by using IBM Storage Scale GUI
    • Monitoring events by using GUI
    • Event notifications
      • Configuring email notifications
    • Monitoring tips by using GUI
    • Monitoring thresholds by using GUI
  • Monitoring system health by using the mmhealth command
    • Monitoring the health of a node
      • Running a user-defined script when an event is raised
    • Event type and monitoring status for system health
      • Creating, raising, and finding custom defined events
    • Threshold monitoring for system health
      • Threshold monitoring prerequisites
      • Predefined and user-defined thresholds
      • Active threshold monitor role
      • Performance data, statistics, and thresholds
    • System health monitoring use cases
      • Threshold monitoring use cases
        • Use case 1: Create a threshold rule and use the mmhealth command to observe the changes in the HEALTH status
        • Use case 2: Observe the file system capacity usage by using default threshold rules
        • Use case 3: Observe the health status changes for a particular component based on the specified threshold rules
        • Use case 4: Create threshold rules for specific filesets
        • Use case 5: Identify the ACTIVE PERFORMANCE MONITOR node
        • Use case 6: Observe the memory usage with MemFree_Rule
        • Use case 7: Observe the running state of the defined threshold rules
    • Configuring webhook by using the mmhealth command
      • Webhook JSON data
    • Additional checks on file system availability for CES exported data
    • Proactive system health alerts
  • Dynamic page pool monitoring
  • Performance monitoring
    • Network performance monitoring
      • Monitoring networks by using GUI
    • Monitoring I/O performance with the mmpmon command
      • Overview of mmpmon
      • Specifying input to the mmpmon command
        • Running mmpmon on multiple nodes
        • Running mmpmon concurrently from multiple users on the same node
      • Display I/O statistics per mounted file system
        • Example of mmpmon fs_io_s request
      • Display I/O statistics for the entire node
        • Example of mmpmon io_s request
      • Understanding the node list facility
        • Add node names to a list of nodes for mmpmon processing
          • Example of mmpmon nlist add request
        • Delete a node list
          • Example of mmpmon nlist del request
        • Create a new node list
        • Show the contents of the current node list
          • Example of mmpmon nlist s request
        • Delete node names from a list of nodes for mmpmon processing
        • Node list examples and error handling
          • A successful fs_io_s request propagated to two nodes
          • Failure on a node accessed by mmpmon
          • Node shutdown and quorum loss
          • Node list failure values
      • Reset statistics to zero
        • Example of mmpmon reset request
      • Understanding the request histogram facility
        • Specifying the size ranges for I/O histograms
        • Specifying the latency ranges for I/O
        • Changing the request histogram facility request size and latency ranges
          • Processing of rhist nr
          • Example of mmpmon rhist nr request
        • Disabling the request histogram facility
          • Example of mmpmon rhist off request
        • Enabling the request histogram facility
          • Example of mmpmon rhist on request
        • Displaying the request histogram facility pattern
          • Example of mmpmon rhist p request
        • Resetting the request histogram facility data to zero
          • Example of mmpmon rhist reset request
        • Displaying the request histogram facility statistics values
          • Example of mmpmon rhist s request
      • Understanding the Remote Procedure Call (RPC) facility
        • Displaying the aggregation of execution time for Remote Procedure Calls (RPCs)
          • Example of mmpmon rpc_s request
        • Displaying the Remote Procedure Call (RPC) execution time according to the size of messages
          • Example of mmpmon rpc_s size request
      • Displaying mmpmon version
        • Example of mmpmon ver request
      • Example mmpmon scenarios and how to analyze and interpret their results
        • fs_io_s and io_s output - how to aggregate and analyze the results
        • Request histogram (rhist) output - how to aggregate and analyze the results
        • Using request source and prefix directive once
          • An example of once and source usage
      • Other information about mmpmon output
        • Counter sizes and counter wrapping
        • Return codes from mmpmon
    • Using the performance monitoring tool
      • Configuring the performance monitoring tool
        • Configuring the sensor
          • Identifying the type of configuration in use
          • Automated configuration
          • Manual configuration
          • Adding or removing a sensor from an existing automated configuration
          • Automatic assignment of single node sensors
          • Enabling performance monitoring sensors by using GUI
          • Impact of sensor configuration
          • Configuring the initial sensor data poll delay for long periods
        • Configuring the collector
          • Configuring multiple collectors
          • Migrating the pmcollector
        • List of performance metrics
          • Linux metrics
          • GPFS metrics
          • AFM metrics
          • Protocol metrics
            • NFS metrics
            • SMB metrics
            • CES S3 metrics
            • CTDB metrics
            • Cross protocol metrics
          • cloud services metrics
          • IBM Storage Scale System metrics
          • Detailed performance monitoring metrics
        • Enabling protocol metrics
        • Configuring performance monitoring API keys
      • Starting and stopping the performance monitoring tool
      • Restarting the performance monitoring tool
      • Configuring the metrics to collect performance data
      • Removing non-detectable resource identifiers from the performance monitoring tool database
      • Measurements
    • Using QoS to collect fileset-level I/O statistics
    • Viewing and analyzing the performance data
      • Performance monitoring using IBM Storage Scale GUI
        • Configuring performance monitoring options in GUI
        • Configuring performance metrics and display options in the Statistics page of the GUI
        • Configuring the dashboard to view performance charts
        • Performance metrics available in the GUI
        • Querying performance data shown in the GUI through CLI
        • Monitoring performance of nodes
        • Monitoring performance of file systems
        • Monitoring performance of NSDs
      • Viewing performance data with mmperfmon
        • List of queries
      • Using IBM Storage Scale performance monitoring bridge with Grafana
    • Analyzing CES S3 metrics
  • Monitoring GPUDirect storage
  • Monitoring events through callbacks
  • Monitoring capacity through GUI
  • Monitoring AFM and AFM DR
    • Monitoring fileset states for AFM
    • Monitoring fileset states for AFM DR
    • Monitoring health and events
      • Monitoring with mmhealth
      • Monitoring callback events for AFM and AFM DR
    • Monitoring performance
      • Monitoring using mmpmon
      • Monitoring using mmperfmon
    • Monitoring prefetch
    • Monitoring status using mmdiag
    • Policies used for monitoring AFM and AFM DR
    • Monitoring AFM and AFM DR using GUI
  • Monitoring profiling sessions with the plugins for NVIDIA Nsight Systems
  • Monitoring AFM to cloud object storage
    • Monitoring fileset states for AFM to cloud object storage
    • Monitoring health and events
    • Monitoring performance
      • Monitoring using mmpmon
      • Monitoring using mmperfmon
    • Monitoring AFM to cloud object storage download and upload
  • Monitoring IBM Storage Scale native REST API
  • Monitoring the IBM Storage Scale system by using call home
    • Uploading custom files using call home
  • Monitoring remote cluster through GUI
  • Monitoring file audit logging
    • Monitoring file audit logging states
    • Monitoring the file audit logging fileset for events
    • Monitoring file audit logging using mmhealth commands
    • Monitoring file audit logging using the GUI
    • Monitoring file audit logging using audit log parser
    • Example of parsing file audit logs with python
    • Monitoring file audit logging with rsyslog and SELinux
  • Monitoring clustered watch folder
    • Monitoring clustered watch folder states
    • Monitoring clustered watch folder with the mmhealth command
    • Monitoring clustered watch folder with the mmwatch status command
    • Monitoring clustered watch folder using GUI
  • Monitoring local read-only cache
    • Monitoring health and events with mmhealth commands
    • Monitoring LROC status using mmdiag command
    • Monitoring file contents in LROC with mmcachectl command
• Troubleshooting
  • Best practices for troubleshooting
    • How to get started with troubleshooting
    • Back up your data
    • Resolve events in a timely manner
    • Keep your software up to date
    • Subscribe to the support notification
    • Know your IBM warranty and maintenance agreement details
    • Know how to report a problem
    • Other problem determination hints and tips
      • Which physical disk is associated with a logical volume in AIX systems?
      • Which nodes in my cluster are quorum nodes?
      • What is stored in the /tmp/mmfs directory and why does it sometimes disappear?
      • Why does my system load increase significantly during the night?
      • What do I do if I receive message 6027-648?
      • Why can't I see my newly mounted Windows file system?
      • Why is the file system mounted on the wrong drive letter?
      • Why does the offline mmfsck command fail with "Error creating internal storage"?
      • Why do I get timeout executing function error message?
      • Questions related to active file management
  • Understanding the system limitations
  • Collecting details of the issues
    • Collecting details of issues by using logs, dumps, and traces
      • Time stamp in GPFS log entries
      • Logs
        • GPFS logs
          • Creating a master GPFS log file
        • Audit messages for cluster configuration changes
        • Protocol services logs
          • S3 logs
          • SMB logs
          • NFS logs
          • Winbind logs
          • The IBM Storage Scale HDFS transparency log
          • Protocol authentication log files
          • CES monitoring and troubleshooting
            • Error displayed when an IP address is removed from the ces_group
        • Operating system error logs
          • MMFS_ABNORMAL_SHUTDOWN
          • MMFS_DISKFAIL
          • MMFS_ENVIRON
          • MMFS_FSSTRUCT
          • MMFS_GENERIC
          • MMFS_LONGDISKIO
          • MMFS_QUOTA
          • MMFS_SYSTEM_UNMOUNT
          • MMFS_SYSTEM_WARNING
          • Error log entry example
        • Transparent cloud tiering logs
        • Performance monitoring tool logs
        • File audit logging logs
        • Active File Management error logs
      • Setting up core dumps on a client RHEL or SLES system
      • Configuration changes required on protocol nodes to collect core dump data
      • Setting up an Ubuntu system to capture crash files
      • Trace facility
        • Generating GPFS trace reports
        • CES tracing and debug data collection
          • Data collection
          • Types of tracing
          • Collecting trace information
            • Running a typical trace
            • Trace timeout
            • Trace log files
            • Trace configuration file
            • Resetting the trace system
            • Using advanced options
        • Tips for using mmprotocoltrace
    • Collecting diagnostic data through GUI
    • CLI commands for collecting issue details
      • Using the gpfs.snap command
        • Data gathered by gpfs.snap on all platforms
        • Data gathered by gpfs.snap on AIX
        • Data gathered by gpfs.snap on Linux
        • Data gathered by gpfs.snap on Windows
        • Data gathered by gpfs.snap for a controller snapshot
        • Data gathered by gpfs.snap on Linux for protocols
          • Data gathered for SMB on Linux
          • Data gathered for NFS on Linux
          • Data gathered for S3 on Linux
          • Data gathered for Object on Linux
          • Data gathered for CES on Linux
          • Data gathered for authentication on Linux
          • Data gathered by gpfs.snap for File audit logging and Watchfolder components
          • Data gathered for Hadoop on Linux
          • Data gathered for core dumps on Linux
        • Data gathered for performance on Linux
      • mmdumpperfdata command
      • mmfsadm command
      • Commands for GPFS cluster state information
        • The mmafmctl Device getstate command
        • The mmhealth command
        • The mmdiag command
        • The mmgetstate command
        • The mmlscluster command
        • The mmlsconfig command
        • The mmrefresh command
        • The mmsdrrestore command
        • The mmexpelnode command
      • GPFS file system and disk information commands
        • Restricted mode mount
        • Read-only mode mount
        • The lsof command
        • The mmlsmount command
        • The mmapplypolicy -L command
          • mmapplypolicy -L 0
          • mmapplypolicy -L 1
          • mmapplypolicy -L 2
          • mmapplypolicy -L 3
          • mmapplypolicy -L 4
          • mmapplypolicy -L 5
          • mmapplypolicy -L 6
        • The mmcheckquota command
        • The mmlsnsd command
        • The mmwindisk command
        • The mmfileid command
        • The SHA digest
    • Collecting details of the issues from performance monitoring tools
    • Other problem determination tools
  • Managing deadlocks
    • Debug data for deadlocks
    • Automated deadlock detection
    • Automated deadlock data collection
    • Pending remote procedure call detection
      • Exclude list for automatic expel
  • Installation and configuration issues
    • Resolving most frequent problems related to installation, deployment, and upgrade
      • Finding deployment related error messages more easily and using them for failure analysis
      • Problems due to missing prerequisites
      • Problems due to mixed operating system levels in the cluster
      • Problems due to using the installation toolkit for functions or configurations not supported
      • Understanding supported upgrade functions with installation toolkit
    • Installation toolkit setup command fails after upgrade to Ubuntu 22.04
    • Installation toolkit fails with Python not found error
    • Installation toolkit fails on Ubuntu 20.04.4 nodes with Ansible related error
    • Installation toolkit Ansible package troubleshooting if it fails for already installed ansible for Red Hat Enterprise Linux® 9.0 and >= Red Hat Enterprise Linux 8.6
    • Ansible playbook is not found after installation
    • Installation toolkit fails if running yum commands result in warning or error
    • Installation toolkit operation fails with PKey parsing or OpenSSH keys related errors
    • Installation toolkit setup fails with an ssh-agent related error
    • systemctl commands time out during installation, deployment, or upgrade with the installation toolkit
    • Installation toolkit setup on Ubuntu fails due to dpkg database lock issue
    • Installation toolkit config populate operation fails to detect object endpoint
    • Installation toolkit fails due to the failed URL request of an IBM Storage Scale GPG key
    • Post installation and configuration problems
    • Cluster is crashed after re-installation
    • Node cannot be added to the GPFS cluster
    • Problems with the /etc/hosts file
    • Linux configuration considerations
    • Python conflicts while deploying object packages using installation toolkit
    • Problems with running commands on other nodes
      • Authorization problems
      • Connectivity problems
      • GPFS error messages for rsh problems
    • Cluster configuration data file issues
      • GPFS cluster configuration data file issues
      • GPFS error messages for cluster configuration data file problems
      • Recovery from loss of GPFS cluster configuration data file
      • Automatic backup of the GPFS cluster data
    • Installation of gpfs.gpfsbin reports an error
    • GPFS application calls
      • Error numbers specific to GPFS applications calls
    • GPFS modules cannot be loaded on Linux
    • GPFS daemon issues
      • GPFS daemon does not come up
        • Steps to follow if the GPFS daemon does not come up
        • Unable to start GPFS after the installation of a new release of GPFS
        • GPFS error messages for shared segment and network problems
        • Error numbers specific to GPFS application calls when the daemon is unable to come up
      • GPFS daemon went down
    • GPFS commands are unsuccessful
      • GPFS error messages for unsuccessful GPFS commands
    • Quorum loss
    • CES configuration issues
    • Application program errors
      • GPFS error messages for application program errors
    • Windows issues
      • Home and .ssh directory ownership and permissions
      • Problems running as Administrator
      • GPFS Windows and SMB2 protocol (CIFS serving)
  • Upgrade issues
    • Installation toolkit setup command fails on RHEL 7.x nodes with setuptools package-related error
    • Upgrade precheck by using the installation toolkit might fail on protocol nodes in an ESS environment
    • Home cluster unable to unload mmfs modules for upgrades
    • File conflict issue while upgrading SLES on IBM Storage Scale nodes
    • NSD nodes cannot connect to storage after upgrading from SLES 15 SP1 to SP2
    • After upgrading IBM Storage Scale code, trying to mark events as read returns a server error message
    • RDMA adapters not supporting ATOMIC operations
  • CCR issues
  • Network issues
    • IBM Storage Scale failures due to a network failure
    • OpenSSH connection delays
    • Analyze network problems with the mmnetverify command
  • File system issues
    • File system fails to mount
      • GPFS error messages for file system mount problems
      • Error numbers specific to GPFS application calls when a file system mount is not successful
      • Mount failure due to client nodes joining before NSD servers are online
    • File system fails to unmount
    • Remote node expelled after remote file system successfully mounted
    • File system forced unmount
      • Additional failure group considerations
      • GPFS error messages for file system forced unmount problems
      • Error numbers specific to GPFS application calls when a file system has been forced to unmount
    • Automount file system does not mount
      • Steps to follow if automount fails to mount on Linux
      • Steps to follow if automount fails to mount on AIX
    • Remote file system does not mount
      • Remote file system I/O fails with the “Function not implemented” error message when UID mapping is enabled
      • Remote file system does not mount due to differing GPFS cluster security configurations
      • Cannot resolve contact node address
      • The remote cluster name does not match the cluster name supplied by the mmremotecluster command
      • Contact nodes down or GPFS down on contact nodes
      • GPFS is not running on the local node
      • The NSD disk does not have an NSD server specified, and the mounting cluster does not have direct access to the disks
      • The cipherList option has not been set properly
      • Remote mounts fail with the permission denied error message
    • Unable to determine whether a file system is mounted
      • GPFS error messages for file system mount status
    • Multiple file system manager failures
      • GPFS error messages for multiple file system manager failures
      • Error numbers specific to GPFS application calls when file system manager appointment fails
    • Discrepancy between GPFS configuration data and the on-disk data for a file system
    • Errors associated with storage pools, filesets and policies
      • A NO_SPACE error occurs when a file system is known to have adequate free space
      • Negative values occur in the 'predicted pool utilizations', when some files are 'ill-placed'
      • Policies - usage errors
      • Errors encountered with policies
      • Filesets - usage errors
      • Errors encountered with filesets
      • Storage pools - usage errors
      • Errors encountered with storage pools
    • Snapshot problems
      • Problems with locating a snapshot
      • Problems not directly related to snapshots
        • GPFS error messages for indirect snapshot errors
      • Snapshot usage errors
        • GPFS error messages for snapshot usage errors
      • Snapshot status errors
        • GPFS error messages for snapshot status errors
      • Snapshot directory name conflicts
      • Errors encountered when restoring a snapshot
    • Failures using the mmbackup command
      • GPFS error messages for mmbackup errors
      • IBM Storage Protect error messages
    • Data integrity
      • Error numbers specific to GPFS application calls when data integrity may be corrupted
    • Messages requeuing in AFM
    • NFSv4 ACL problems
  • Disk issues
    • NSD and underlying disk subsystem failures
      • Error encountered while creating and using NSD disks
      • Displaying NSD information
      • Disk device name is an existing NSD name
      • GPFS has declared NSDs as down
      • Unable to access disks
      • Guarding against disk failures
      • Disk connectivity failure and recovery
      • Partial disk failure
    • GPFS has declared NSDs built on top of AIX logical volumes as down
      • Verify whether the logical volumes are properly defined
      • Check the volume group on each node
      • Volume group varyon problems
    • Disk accessing commands fail to complete due to problems with some non-IBM disks
    • Disk media failure
      • Replica mismatches
        • Methods to repair metadata and data block replica mismatches
        • Repairing data block replica mismatches with the global replica selection rule
        • Repairing data block replica mismatches with the file level replica selection rule
        • Format of the gpfs.readReplicaRule string
        • Example of using the gpfs.readReplicaRule string
      • Replicated metadata and data
      • Replicated metadata only
      • Strict replication
      • No replication
      • GPFS error messages for disk media failures
      • Error numbers specific to GPFS application calls when disk failure occurs
    • Persistent Reserve errors
      • Understanding Persistent Reserve
      • Checking Persistent Reserve
      • Clearing a leftover persistent reservation (PR)
      • Manually enabling or disabling Persistent Reserve
    • GPFS is not using the underlying multipath device
    • Kernel panics with the message "GPFS deadman switch timer has expired and there are still outstanding I/O requests"
    • Deleting all the disks from a performance pool
  • GPUDirect Storage troubleshooting
  • Security issues
    • Encryption issues
      • Unable to add encryption policies
      • Receiving Permission denied message
      • Value too large failure when creating a file
      • Mount failure for a file system with encryption rules
      • Permission denied failure of key rewrap
    • Authentication issues
      • File protocol authentication setup issues
      • Protocol authentication issues
      • Authentication error events
      • Nameserver issues related to AD authentication
    • Authorization issues
    • The IBM Security Lifecycle Manager prerequisites cannot be installed
    • IBM Security Lifecycle Manager cannot be installed
  • Protocol issues
    • NFS issues
      • CES NFS failure due to network failure
      • NFS client with stale inode data
      • NFS mount issues
      • NFS error events
      • NFS error scenarios
      • Collecting diagnostic data for NFS
      • NFS startup warnings
      • NFS client and server runtime diagnostic
        • Collecting NFS client debug data
        • Collecting NFS server trace data
        • Troubleshooting NFS issues by using nfs_client_debug_script.py and ganeshatracectl
    • SMB issues
      • Determining the health of integrated SMB server
      • File access failure from an SMB client with sharing conflict
      • SMB client on Linux fails with an NT status logon failure
      • SMB client on Linux fails with the NT status password must change error message
      • SMB mount issues
      • Net use on Windows fails with System error 86
      • Net use on Windows fails with System error 59 for some users
      • Winbindd causes high CPU utilization
      • SMB error events
      • SMB access issues
      • Slow access to SMB caused by contended access to files or directories
      • CTDB issues
      • smbd start issue
    • S3 issues
      • I/O upload fails with "Could not connect to the endpoint URL."
      • I/O upload fails with “We encountered an internal error. Please try again”.
      • I/O upload fails because of invalid ID or the multipart upload aborted or completed
      • I/O upload fails with “The specified key does not exist”.
      • The CES shared root path is not mounted or unavailable
      • Inaccessibility of the CES shared root path
      • Cannot locate a config.json file
      • S3 backup fails
      • The S3 configuration is not restored
      • Cannot find the mms3-config.json file in the CES shared root path
      • Cannot recover secret keys if encryption master keys are regenerated
      • Cron job synchronization issue
      • Cronjob setting for bucket notification interval
      • Cannot recover passwords for connections if encryption master keys are regenerated
      • S3 backup does not include certificates
      • NoSuchKeyExists
      • AccessDenied
      • S3 notification events missed
      • Duplicate S3 notification events
      • NooBaa endpoint failure because of reserved ports
      • The S3 bucket listing failure
      • The bucket create fails to inherit ACL
      • S3 service health fails with the s3_invalid_config event after bucket creation failure
      • The first-time window shows 0 for minimum time
  • Disaster recovery issues
    • Disaster recovery setup problems
    • Other problems with disaster recovery
  • Performance issues
    • Issues caused by the low-level system components
      • Suboptimal performance due to high utilization of the system level components
      • Suboptimal performance due to long IBM Storage Scale waiters
      • Suboptimal performance due to networking issues caused by faulty system components
    • Issues caused by the suboptimal setup or configuration of the IBM Storage Scale cluster
      • Suboptimal performance due to unbalanced architecture and improper system level settings
      • Suboptimal performance due to low values assigned to IBM Storage Scale configuration parameters
      • Suboptimal performance due to new nodes with default parameter values added to the cluster
      • Suboptimal performance due to low value assigned to QoSIO operation classes
      • Suboptimal performance due to improper mapping of the file system NSDs to the NSD servers
      • Suboptimal performance due to incompatible file system block allocation type
    • Issues caused by the unhealthy state of the components used
      • Suboptimal performance due to failover of NSDs to secondary server - NSD server failure
      • Suboptimal performance due to failover of NSDs to secondary server - Disk connectivity failure
      • Suboptimal performance due to file system being fully utilized
      • Suboptimal performance due to VERBS RDMA being inactive
    • Issues caused by the use of configurations or commands related to maintenance and operation
      • Suboptimal performance due to maintenance commands in progress
      • Suboptimal performance due to frequent invocation or execution of maintenance commands
      • Suboptimal performance when a tracing is active on a cluster
      • Suboptimal performance due to replication settings being set to 2 or 3
      • Suboptimal performance due to updates made on a file system or fileset with snapshot
    • Delays and deadlocks
    • Failures using the mmpmon command
      • Setup problems using mmpmon
      • Incorrect output from mmpmon
      • Abnormal termination or hang in mmpmon
      • Tracing the mmpmon command
  • GUI and monitoring issues
    • Insufficient GUI memory on large clusters
    • GUI reported as DEGRADED due to GPFS_JOBS refresh task failure
    • GUI fails to start
    • GUI fails to restart after upgrade of all other GPFS packages on SLES 15 SP3
    • GUI fails to start after manual installation or upgrade on Ubuntu nodes
    • GUI login page does not open
    • GUI performance monitoring issues
    • GUI is showing “Server was unable to process the request” error
    • GUI is displaying outdated information
    • Capacity information is not available in GUI pages
    • GUI automatically logs off the users when using Google Chrome or Mozilla Firefox
  • AFM issues
  • AFM DR issues
  • AFM to cloud object storage issues
  • Troubleshooting IBM Storage Scale native REST API
    • Common errors in IBM Storage Scale native REST API
    • IBM Storage Scale native REST API logs
    • Request IDs in IBM Storage Scale native REST API
    • Debugging the IBM Storage Scale native REST API issues
    • Debugging node identities issues
    • Troubleshooting persistent reserve errors for IBM Storage Scale native REST API
    • Disabling and re-enabling IBM Storage Scale native REST API
  • Transparent cloud tiering issues
  • File audit logging issues
    • Failure of mmaudit because of the file system level
    • JSON reporting issues in file audit logging
    • File audit logging issues with remotely mounted file systems
    • Audit fileset creation issues when enabling file audit logging
    • Failure to append messages to Buffer Pool
  • Cloudkit issues
    • Common cloudkit issues
    • Cloudkit issues on AWS
    • Cloudkit issues on GCP
    • Cloudkit issues on Azure
    • IBM Storage Scale on AWS issues
      • Diagnosing and cleaning-up deployment failures
      • Collecting debug data
  • Troubleshooting mmwatch
  • Troubleshooting plugin issues for NVIDIA Nsight Systems
  • Troubleshooting Shared memory communications direct issues
  • Health monitoring issues
  • Maintenance procedures
    • Directed maintenance procedures available in the GUI
      • Start NSD
      • Start GPFS daemon
      • Increase fileset space
      • Synchronize node clocks
      • Start performance monitoring collector service
      • Start performance monitoring sensor service
      • Activate AFM performance monitoring sensors
      • Activate NFS performance monitoring sensors
      • Activate SMB performance monitoring sensors
      • Configure NFS sensors
      • Configure SMB sensors
      • Mount file system if it must be mounted
      • Start the GUI service on the remote nodes
      • Repair a failed GUI refresh task
      • Fixing a failed GUI refresh task caused by an RBAC configuration issue
    • Directed maintenance procedures for tip events
  • Recovery procedures
    • Restoring data and system configuration
    • Automatic recovery
    • Upgrade recovery
    • Recovering cluster configuration by using CCR
      • Recovering from a single quorum or non-quorum node failure
      • Recovering from the loss of a majority of quorum nodes
      • Recovering from damage or loss of the CCR on all quorum nodes
      • Recovering from an existing CCR backup
    • Repair of cluster configuration information when no CCR backup is available
      • Repair of cluster configuration information when no CCR backup information is available: mmsdrrestore command
  • Support for troubleshooting
    • Contacting IBM support center
      • Information to be collected before contacting the IBM Support Center
      • How to contact the IBM Support Center
    • Call home notifications to IBM Support
  • References
    • Events
      • Afm events
      • Array events
      • Auth events
      • Block events
      • Callhome events
      • Canister events
      • Cesnetwork events
      • Cescluster events
      • Cloudgateway events
      • Clusterstate events
      • Dataorch events
      • Disk events
      • Enclosure events
      • Encryption events
      • Fileauditlog events
      • Filesystem events
      • Filesysmgr events
      • Gds events
      • Gpfs events
      • Gui events
      • Hadoopconnector events
      • Healthcheck events
      • Hdfs_datanode events
      • Hdfs_namenode events
      • Job events
      • Keystone events
      • Localcache events
      • Msgqueue events
      • Network events
      • Nfs events
      • Noobaa events
      • Nvme events
      • Nvmeof events
      • Perfmon events
      • Physicaldisk events
      • Powerhw events
      • Recoverygroup events
      • Scalemgmt events
      • Serverraid events
      • Smb events
      • Stretchcluster events
      • S3 events
      • Threshold events
      • Watchfolder events
      • Virtualdisk events
    • Transparent cloud tiering status description
    • cloud services audit events
    • Messages
      • Message severity tags
      • 6027-000
      • 6027-300 [N]
      • 6027-301
      • 6027-302 [E]
      • 6027-303 [N]
      • 6027-304 [W]
      • 6027-305 [N]
      • 6027-306 [E]
      • 6027-307 [E]
      • 6027-310 [I]
      • 6027-311 [N]
      • 6027-312 [E]
      • 6027-313 [X]
      • 6027-314 [E]
      • 6027-315 [E]
      • 6027-316 [E]
      • 6027-317 [A]
      • 6027-318 [E]
      • 6027-319
      • 6027-320
      • 6027-321
      • 6027-322
      • 6027-323 [A]
      • 6027-324
      • 6027-328 [W]
      • 6027-329
      • 6027-334 [E]
      • 6027-335 [E]
      • 6027-336 [E]
      • 6027-337 [N]
      • 6027-338 [N]
      • 6027-339 [E]
      • 6027-340
      • 6027-341 [D]
      • 6027-342 [E]
      • 6027-343 [E]
      • 6027-344 [E]
      • 6027-345
      • 6027-346 [E]
      • 6027-347 [E]
      • 6027-348 [E]
      • 6027-349 [E]
      • 6027-350 [E]
      • 6027-358
      • 6027-359
      • 6027-360
      • 6027-361 [E]
      • 6027-362
      • 6027-363
      • 6027-364
      • 6027-365 [I]
      • 6027-369
      • 6027-370
      • 6027-371
      • 6027-372
      • 6027-373
      • 6027-374
      • 6027-375
      • 6027-376
      • 6027-377
      • 6027-378 [I]
      • 6027-379
      • 6027-380
      • 6027-382
      • 6027-383
      • 6027-384
      • 6027-385
      • 6027-386
      • 6027-387
      • 6027-388
      • 6027-389
      • 6027-390
      • 6027-391
      • 6027-392
      • 6027-393
      • 6027-394
      • 6027-399
      • 6027-416
      • 6027-417
      • 6027-418
      • 6027-419
      • 6027-420
      • 6027-421
      • 6027-422
      • 6027-423
      • 6027-424
      • 6027-425
      • 6027-426
      • 6027-427
      • 6027-428
      • 6027-429
      • 6027-430
      • 6027-431
      • 6027-432
      • 6027-433
      • 6027-434
      • 6027-435 [N]
      • 6027-438
      • 6027-439
      • 6027-441
      • 6027-445
      • 6027-446
      • 6027-451
      • 6027-452
      • 6027-453
      • 6027-461
      • 6027-462
      • 6027-463
      • 6027-465
      • 6027-468
      • 6027-469
      • 6027-470
      • 6027-471
      • 6027-472 [E]
      • 6027-473 [X]
      • 6027-474 [X]
      • 6027-475
      • 6027-476
      • 6027-477
      • 6027-478
      • 6027-479 [N]
      • 6027-480
      • 6027-481 [E]
      • 6027-482 [E]
      • 6027-483 [N]
      • 6027-484
      • 6027-485
      • 6027-486
      • 6027-487
      • 6027-488
      • 6027-489
      • 6027-490 [N]
      • 6027-491
      • 6027-492
      • 6027-493
      • 6027-494
      • 6027-495
      • 6027-496
      • 6027-497
      • 6027-498
      • 6027-499 [X]
      • 6027-500
      • 6027-501
      • 6027-502
      • 6027-504
      • 6027-505
      • 6027-506
      • 6027-507
      • 6027-510
      • 6027-511
      • 6027-512
      • 6027-514
      • 6027-515
      • 6027-516
      • 6027-517
      • 6027-518
      • 6027-519
      • 6027-520
      • 6027-530
      • 6027-531
      • 6027-532 [E]
      • 6027-533 [W]
      • 6027-534
      • 6027-535
      • 6027-536
      • 6027-537
      • 6027-538
      • 6027-539
      • 6027-540
      • 6027-541
      • 6027-542 [N]
      • 6027-543
      • 6027-544
      • 6027-545
      • 6027-546
      • 6027-547
      • 6027-548
      • 6027-549 [E]
      • 6027-550 [X]
      • 6027-551
      • 6027-552
      • 6027-553
      • 6027-554
      • 6027-555
      • 6027-556
      • 6027-557
      • 6027-558
      • 6027-559
      • 6027-560
      • 6027-561
      • 6027-562
      • 6027-563
      • 6027-564
      • 6027-565
      • 6027-566
      • 6027-567
      • 6027-568
      • 6027-569
      • 6027-570
      • 6027-571
      • 6027-572
      • 6027-573
      • 6027-574
      • 6027-575
      • 6027-576
      • 6027-577
      • 6027-578
      • 6027-579
      • 6027-580
      • 6027-581
      • 6027-582
      • 6027-584
      • 6027-585
      • 6027-586
      • 6027-587
      • 6027-588
      • 6027-589
      • 6027-590 [W]
      • 6027-591
      • 6027-592
      • 6027-593 [E]
      • 6027-594
      • 6027-595 [E]
      • 6027-596 [I]
      • 6027-597 [E]
      • 6027-598 [E]
      • 6027-599 [E]
      • 6027-600
      • 6027-601
      • 6027-602
      • 6027-603
      • 6027-604 [E]
      • 6027-605 [N]
      • 6027-606 [E]
      • 6027-607
      • 6027-608 [E]
      • 6027-609
      • 6027-610
      • 6027-611 [I]
      • 6027-612
      • 6027-613 [N]
      • 6027-614
      • 6027-615
      • 6027-616 [X]
      • 6027-617 [I]
      • 6027-618 [X]
      • 6027-619
      • 6027-620
      • 6027-621
      • 6027-622 [E]
      • 6027-623
      • 6027-624
      • 6027-625
      • 6027-626
      • 6027-627
      • 6027-628
      • 6027-629 [N]
      • 6027-630 [N]
      • 6027-631
      • 6027-632
      • 6027-633
      • 6027-634
      • 6027-635 [E]
      • 6027-636 [E]
      • 6027-637 [E]
      • 6027-638 [E]
      • 6027-639 [E]
      • 6027-640 [E]
      • 6027-641 [E]
      • 6027-642 [N]
      • 6027-643 [I]
      • 6027-644
      • 6027-645
      • 6027-646 [E]
      • 6027-647 [E]
      • 6027-648
      • 6027-649
      • 6027-650 [X]
      • 6027-660
      • 6027-661
      • 6027-662
      • 6027-663
      • 6027-664
      • 6027-665
      • 6027-666
      • 6027-667
      • 6027-668
      • 6027-669
      • 6027-670
      • 6027-671
      • 6027-672
      • 6027-673
      • 6027-674
      • 6027-675
      • 6027-676
      • 6027-677
      • 6027-678
      • 6027-679
      • 6027-680 [E]
      • 6027-681
      • 6027-682
      • 6027-683
      • 6027-684
      • 6027-685
      • 6027-686
      • 6027-687
      • 6027-688
      • 6027-689
      • 6027-690
      • 6027-691
      • 6027-692
      • 6027-693
      • 6027-694
      • 6027-695 [E]
      • 6027-696 [E]
      • 6027-697 [E]
      • 6027-698 [E]
      • 6027-699 [E]
      • 6027-700 [E]
      • 6027-701 [X]
      • 6027-702 [X]
      • 6027-703 [X]
      • 6027-704
      • 6027-705
      • 6027-706
      • 6027-707
      • 6027-708
      • 6027-709
      • 6027-710
      • 6027-711 [E]
      • 6027-712 [E]
      • 6027-713
      • 6027-714
      • 6027-715
      • 6027-716 [E]
      • 6027-717 [E]
      • 6027-718
      • 6027-719 [E]
      • 6027-720 [E]
      • 6027-721 [E]
      • 6027-722
      • 6027-723
      • 6027-724 [E]
      • 6027-725
      • 6027-726 [E]
      • 6027-727
      • 6027-728
      • 6027-729
      • 6027-730
      • 6027-731
      • 6027-732
      • 6027-733
      • 6027-734 [W]
      • 6027-735
      • 6027-736
      • 6027-737
      • 6027-738
      • 6027-739
      • 6027-740
      • 6027-741
      • 6027-742
      • 6027-743
      • 6027-744
      • 6027-745
      • 6027-746
      • 6027-747 [E]
      • 6027-748
      • 6027-749
      • 6027-750 [E]
      • 6027-751 [E]
      • 6027-752 [E]
      • 6027-753 [E]
      • 6027-754
      • 6027-755 [I]
      • 6027-756 [E]
      • 6027-757
      • 6027-758
      • 6027-759
      • 6027-760 [E]
      • 6027-761 [W]
      • 6027-762
      • 6027-763
      • 6027-764
      • 6027-765 [W]
      • 6027-766 [N]
      • 6027-767 [N]
      • 6027-768
      • 6027-769
      • 6027-770
      • 6027-771
      • 6027-772
      • 6027-773
      • 6027-774
      • 6027-775
      • 6027-776
      • 6027-777 [I]
      • 6027-778 [I]
      • 6027-779
      • 6027-780
      • 6027-781
      • 6027-784 [E]
      • 6027-785 [E]
      • 6027-786 [E]
      • 6027-787 [E]
      • 6027-788 [E]
      • 6027-789
      • 6027-790
      • 6027-792
      • 6027-793
      • 6027-794
      • 6027-795
      • 6027-796
      • 6027-797
      • 6027-798
      • 6027-799
      • 6027-850
      • 6027-851
      • 6027-852
      • 6027-853
      • 6027-854
      • 6027-855
      • 6027-856
      • 6027-857
      • 6027-858
      • 6027-859
      • 6027-860
      • 6027-861
      • 6027-862
      • 6027-863
      • 6027-864
      • 6027-865
      • 6027-866 [E]
      • 6027-867
      • 6027-868
      • 6027-869
      • 6027-870 [E]
      • 6027-871 [E]
      • 6027-872 [E]
      • 6027-873 [W]
      • 6027-874 [E]
      • 6027-875 [E]
      • 6027-876 [E]
      • 6027-877 [E]
      • 6027-878 [E]
      • 6027-879 [E]
      • 6027-880
      • 6027-881 [E]
      • 6027-882 [E]
      • 6027-883
      • 6027-884 [E:nnn]
      • 6027-885 [E:nnn]
      • 6027-886 [E:nnn]
      • 6027-887 [W]
      • 6027-888 [W]
      • 6027-889 [E]
      • 6027-890 [E]
      • 6027-891 [X]
      • 6027-892 [E]
      • 6027-893 [X]
      • 6027-894 [X]
      • 6027-895 [X]
      • 6027-896 [X]
      • 6027-897 [X]
      • 6027-898 [X]
      • 6027-899 [X]
      • 6027-900 [E]
      • 6027-901 [E]
      • 6027-902 [E]
      • 6027-903 [E:nnn]
      • 6027-904 [E]
      • 6027-905 [E]
      • 6027-906 [E:nnn]
      • 6027-907 [E:nnn]
      • 6027-908 [W]
      • 6027-909 [E]
      • 6027-910 [E:nnn]
      • 6027-911 [E]
      • 6027-912 [E]
      • 6027-913
      • 6027-914
      • 6027-915
      • 6027-916
      • 6027-917
      • 6027-918
      • 6027-919
      • 6027-920 [E]
      • 6027-921 [E]
      • 6027-922 [X]
      • 6027-923 [W]
      • 6027-924 [X]
      • 6027-925
      • 6027-926
      • 6027-927
      • 6027-928 [E]
      • 6027-929 [W]
      • 6027-930 [W]
      • 6027-931 [E]
      • 6027-932 [E]
      • 6027-933 [W]
      • 6027-934 [W]
      • 6027-935 [W]
      • 6027-936 [W]
      • 6027-937 [E]
      • 6027-938 [E]
      • 6027-939 [E]
      • 6027-940
      • 6027-941
      • 6027-943
      • 6027-944
      • 6027-945
      • 6027-946
      • 6027-947
      • 6027-948 [E:nnn]
      • 6027-949 [E]
      • 6027-950 [E:nnn]
      • 6027-951 [E]
      • 6027-953
      • 6027-954
      • 6027-955
      • 6027-956
      • 6027-957
      • 6027-959
      • 6027-960
      • 6027-961
      • 6027-962
      • 6027-963
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      • 6027-966
      • 6027-967
      • 6027-971
      • 6027-972
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      • 6027-976
      • 6027-977
      • 6027-978
      • 6027-979
      • 6027-980
      • 6027-981
      • 6027-982
      • 6027-983
      • 6027-984 [E]
      • 6027-985
      • 6027-986
      • 6027-987
      • 6027-988
      • 6027-989
      • 6027-990
      • 6027-991
      • 6027-992
      • 6027-993
      • 6027-994
      • 6027-995
      • 6027-996 [E:nnn]
      • 6027-997 [W]
      • 6027-998 [E]
      • 6027-999 [E]
      • 6027-1004
      • 6027-1005
      • 6027-1006
      • 6027-1007
      • 6027-1008
      • 6027-1022
      • 6027-1023
      • 6027-1028
      • 6027-1029
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      • 6027-1031
      • 6027-1032
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      • 6027-1038
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      • 6027-1084
      • 6027-1113
      • 6027-1119
      • 6027-1120
      • 6027-1123
      • 6027-1124
      • 6027-1132
      • 6027-1133
      • 6027-1135
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      • 6027-1167
      • 6027-1168
      • 6027-1169
      • 6027-1178
      • 6027-1188
      • 6027-1189
      • 6027-1197
      • 6027-1200
      • 6027-1201
      • 6027-1202
      • 6027-1203
      • 6027-1204
      • 6027-1205
      • 6027-1206
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      • 6027-1219
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      • 6027-1227
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      • 6027-1234
      • 6027-1235
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      • 6027-1262
      • 6027-1263
      • 6027-1264
      • 6027-1265 [I]
      • 6027-1268
      • 6027-1269
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      • 6027-1273
      • 6027-1274
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      • 6027-1285 [E]
      • 6027-1287
      • 6027-1288
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      • 6027-1312 [E]
      • 6027-1323 [I]
      • 6027-1324 [I]
      • 6027-1325 [I]
      • 6027-1332
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      • 6027-2429
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      • 6027-2615
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      • 6027-2618 [N]
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      • 6027-3955 [E]
      • 6027-3956 [E]
      • 6027-3957 [N]
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      • 6027-3961 [E]
      • 6027-3962 [E]
      • 6027-4000 [I]
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      • 6027-4019 [D]
      • 6027-4020 [I]
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      • 6027-4022 [E]
      • 6027-4023 [E]
      • 6027-4024 [E]
      • 6027-4025 [I]
      • 6027-4100 [E]
      • 6027-4101 [E]
      • 6027-4102 [E]
      • 6027-4103 [E]
      • 6027-4104 [E]
      • 6027-4105 [E]
      • 6027-4106 [E]
      • 6027-4107 [E]
      • 6027-4108 [E]
      • 6027-4109 [W]
      • 6027-4110 [I]
      • 6027-4111 [E]
      • 6027-4200 [E]
      • 6027-4201 [B]
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      • 6027-4204 [E]
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      • 6027-4208 [I]
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      • 6027-4303 [E]
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      • 6027-4310 [E]
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• Command reference
  • Command exceptions for AIX and Windows
  • cloudkit command
  • gpfs.snap command
  • mmaddcallback command
  • mmadddisk command
  • mmaddnode command
  • mmadquery command
  • mmafmconfig command
  • mmafmcosaccess command
  • mmafmcosconfig command
  • mmafmcosctl command
  • mmafmcoskeys command
  • mmafmctl command
  • mmafmlocal command
  • mmapplypolicy command
  • mmaudit command
  • mmauth command
  • mmbackup command
  • mmbackupconfig command
  • mmbuildgpl command
  • mmcachectl command
  • mmcallhome command
  • mmces command
  • mmchattr command
  • mmchcluster command
  • mmchconfig command
  • mmchdisk command
  • mmcheckquota command
  • mmchfileset command
  • mmchfs command
  • mmchlicense command
  • mmchmgr command
  • mmchnode command
  • mmchnodeclass command
  • mmchnsd command
  • mmchpolicy command
  • mmchpool command
  • mmchqos command
  • mmclidecode command
  • mmclone command
  • mmcloudgateway command
  • mmcloudworkflows utility
  • mmcrcluster command
  • mmcrfileset command
  • mmcrfs command
  • mmcrnodeclass command
  • mmcrnsd command
  • mmcrsnapshot command
  • mmdefedquota command
  • mmdefquotaoff command
  • mmdefquotaon command
  • mmdefragfs command
  • mmdelacl command
  • mmdelcallback command
  • mmdeldisk command
  • mmdelfileset command
  • mmdelfs command
  • mmdelnode command
  • mmdelnodeclass command
  • mmdelnsd command
  • mmdelsnapshot command
  • mmdf command
  • mmdiag command
  • mmdsh command
  • mmeditacl command
  • mmedquota command
  • mmexportfs command
  • mmfsck command
  • mmfsckx command
  • mmfsctl command
  • mmgetacl command
  • mmgetstate command
  • mmhadoopctl command
  • mmhdfs command
  • mmhealth command
  • mmimgbackup command
  • mmimgrestore command
  • mmimportfs command
  • mmkeyserv command
  • mmlinkfileset command
  • mmlsattr command
  • mmlscallback command
  • mmlscluster command
  • mmlsconfig command
  • mmlsdisk command
  • mmlsfileset command
  • mmlsfs command
  • mmlslicense command
  • mmlsmgr command
  • mmlsmount command
  • mmlsnodeclass command
  • mmlsnsd command
  • mmlspolicy command
  • mmlspool command
  • mmlsqos command
  • mmlsquota command
  • mmlssnapshot command
  • mmmigratefs command
  • mmmount command
  • mmnetverify command
  • mmnfs command
  • mmnsddiscover command
  • mmobj command
  • mmperfmon command
  • mmpmon command
  • mmprotocoltrace command
  • mmpsnap command
  • mmpstat command
  • mmptop command
  • mmputacl command
  • mmqos command
  • mmquotaoff command
  • mmquotaon command
  • mmreclaimspace command
  • mmremotecluster command
  • mmremotefs command
  • mmrepquota command
  • mmrestoreconfig command
  • mmrestorefs command
  • mmrestrictedctl command
  • mmrestripefile command
  • mmrestripefs command
  • mmrpldisk command
  • mmsdrrestore command
  • mmsetquota command
  • mmshutdown command
  • mmsmb command
  • mmsnapdir command
  • mmstartup command
  • mmstartpolicy command
  • mms3 command
  • mmtracectl command
  • mmumount command
  • mmunlinkfileset command
  • mmuserauth command
  • mmwatch command
  • mmwinservctl command
  • mmxcp command
  • scalectl command
    • scalectl apihealth command
    • scalectl afm command
    • scalectl afmcos command
    • scalectl authorization command
    • scalectl cluster command
    • scalectl config command
    • scalectl diagnostics command
    • scalectl fileset command
    • scalectl filesystem command
    • scalectl node command
    • scalectl nodeclass command
    • scalectl nsd command
    • scalectl operations command
    • scalectl policy command
    • scalectl troubleshooting command
    • scalectl utils command
  • spectrumscale command
• Programming reference
  • IBM Storage Scale Data Management API for GPFS information
    • Overview of IBM Storage Scale Data Management API for GPFS
      • GPFS-specific DMAPI events
      • DMAPI functions
        • Mandatory functions implemented in DMAPI for GPFS
        • Optional functions implemented in DMAPI for GPFS
        • Optional functions that are not implemented in DMAPI for GPFS
        • GPFS-specific DMAPI functions
      • DMAPI configuration attributes
      • DMAPI restrictions for GPFS
    • Concepts of IBM Storage Scale Data Management API for GPFS
      • Sessions
      • Data management events
        • Reliable DMAPI destroy events
      • Mount and unmount
      • Tokens and access rights
      • Parallelism in Data Management applications
      • Data Management attributes
      • Support for NFS
      • Quota
      • Memory mapped files
    • Administration of IBM Storage Scale Data Management API for GPFS
      • Required files for implementation of Data Management applications
      • GPFS configuration attributes for DMAPI
      • Enabling DMAPI for a file system
      • Initializing the Data Management application
    • Specifications of enhancements for IBM Storage Scale Data Management API for GPFS
      • Enhancements to data structures
      • Usage restrictions on DMAPI functions
      • Definitions for GPFS-specific DMAPI functions
        • dm_handle_to_snap
        • dm_make_xhandle
        • dm_remove_dmattr_nosync
        • dm_set_dmattr_nosync
        • dm_set_eventlist_nosync
        • dm_set_region_nosync
        • dm_sync_dmattr_by_handle
      • Semantic changes to DMAPI functions
      • GPFS-specific DMAPI events
      • Additional error codes returned by DMAPI functions
    • Failure and recovery of IBM Storage Scale Data Management API for GPFS
      • Single-node failure
      • Session failure and recovery
      • Event recovery
      • Loss of access rights
      • DODeferred deletions
      • DM application failure
  • GPFS programming interfaces
    • gpfs_acl_t structure
    • gpfs_clone_copy() subroutine
    • gpfs_clone_snap() subroutine
    • gpfs_clone_split() subroutine
    • gpfs_clone_unsnap() subroutine
    • gpfs_close_inodescan() subroutine
    • gpfs_cmp_fssnapid() subroutine
    • gpfs_declone() subroutine
    • gpfs_direntx_t structure
    • gpfs_direntx64_t structure
    • gpfs_fcntl() subroutine
    • gpfs_fgetattrs() subroutine
    • gpfs_fputattrs() subroutine
    • gpfs_fputattrswithpathname() subroutine
    • gpfs_free_fssnaphandle() subroutine
    • gpfs_fssnap_handle_t structure
    • gpfs_fssnap_id_t structure
    • gpfs_fstat() subroutine
    • gpfs_fstat_x() subroutine
    • gpfs_get_fsname_from_fssnaphandle() subroutine
    • gpfs_get_fssnaphandle_by_fssnapid() subroutine
    • gpfs_get_fssnaphandle_by_name() subroutine
    • gpfs_get_fssnaphandle_by_path() subroutine
    • gpfs_get_fssnapid_from_fssnaphandle() subroutine
    • gpfs_get_pathname_from_fssnaphandle() subroutine
    • gpfs_get_snapdirname() subroutine
    • gpfs_get_snapname_from_fssnaphandle() subroutine
    • gpfs_getacl() subroutine
    • gpfs_getacl_fd() subroutine
    • gpfs_iattr_t structure
    • gpfs_iattr64_t structure
    • gpfs_iclose() subroutine
    • gpfs_ifile_t structure
    • gpfs_igetattrs() subroutine
    • gpfs_igetattrsx() subroutine
    • gpfs_igetfilesetname() subroutine
    • gpfs_igetfilesetdomainid() subroutine
    • gpfs_igetstoragepool() subroutine
    • gpfs_iopen() subroutine
    • gpfs_iopen64() subroutine
    • gpfs_iputattrsx() subroutine
    • gpfs_iread() subroutine
    • gpfs_ireaddir() subroutine
    • gpfs_ireaddir64() subroutine
    • gpfs_ireadlink() subroutine
    • gpfs_ireadlink64() subroutine
    • gpfs_ireadx() subroutine
    • gpfs_iscan_t structure
    • gpfs_lib_init() subroutine
    • gpfs_lib_term() subroutine
    • gpfs_linkat() subroutine
    • gpfs_next_inode() subroutine
    • gpfs_next_inode64() subroutine
    • gpfs_next_inode_with_xattrs() subroutine
    • gpfs_next_inode_with_xattrs64() subroutine
    • gpfs_next_xattr() subroutine
    • gpfs_opaque_acl_t structure
    • gpfs_open_inodescan() subroutine
    • gpfs_open_inodescan64() subroutine
    • gpfs_open_inodescan_with_xattrs() subroutine
    • gpfs_open_inodescan_with_xattrs64() subroutine
    • gpfs_prealloc() subroutine
    • gpfs_putacl() subroutine
    • gpfs_putacl_fd() subroutine
    • gpfs_quotactl() subroutine
    • gpfs_quotaInfo_t structure
    • gpfs_seek_inode() subroutine
    • gpfs_seek_inode64() subroutine
    • gpfs_stat() subroutine
    • gpfs_stat_inode() subroutine
    • gpfs_stat_inode64() subroutine
    • gpfs_stat_inode_with_xattrs() subroutine
    • gpfs_stat_inode_with_xattrs64() subroutine
    • gpfs_stat_x() subroutine
    • gpfsFcntlHeader_t structure
    • gpfsGetDataBlkDiskIdx_t structure
    • gpfsGetFilesetName_t structure
    • gpfsGetReplication_t structure
    • gpfsGetSetXAttr_t structure
    • gpfsGetSnapshotName_t structure
    • gpfsGetStoragePool_t structure
    • gpfsListXAttr_t structure
    • gpfsRestripeData_t structure
    • gpfsRestripeRange_t structure
    • gpfsRestripeRangeV2_t structure
    • gpfsSetReplication_t structure
    • gpfsSetStoragePool_t structure
  • GPFS user exits
    • mmsdrbackup user exit
    • nsddevices user exit
    • syncfsconfig user exit
    • preunmount user exit
    • IBM Storage Scale management API endpoints
      • Access control list endpoints
        • Access/acls: GET
        • Access/acls/{userGroup}: GET
        • Access/acls/{userGroup}: DELETE
        • Access/acls/{userGroup}/entry/{entryId}: DELETE
        • Access/acls/{userGroup}: POST
        • Access/acls/{userGroup}: PUT
        • Filesystems/{filesystemName}/acl/{path}: GET
        • Filesystems/{filesystemName}/acl/{path}: PUT
      • Active File Management endpoints
        • Filesystems/{filesystemName}/afm/state: GET
        • Filesystems/{filesystemName}/filesets/{filesetName}/psnaps: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/psnaps/{snapshotName}: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/policy: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetsName}/cos/policy: GET
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/policy: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/policy: PUT
        • afm/upload/{filename}: DELETE
      • API information endpoints
        • Info: GET
      • Asynchronous Jobs endpoints
        • Jobs: GET
        • Jobs/{jobId}: DELETE
        • Jobs/{jobID}: GET
      • Cloud Object Storage endpoints
        • /bucket: GET
        • Bucket/keys: PUT
        • Bucket/keys/{bucketName}: DELETE
      • Cluster Export Services endpoints
        • CES/addresses: GET
        • CES/addresses/{cesAddress}: GET
        • CES/services: GET
        • CES/services/{service}: GET
      • Cluster management endpoints
        • Gnr/clustermgmt/nodes/{names}/state: GET
      • Cluster configuration endpoints
        • Cluster: GET
        • Config: GET
      • Cluster health endpoints
        • cluster/filesystems/afmFilesets/health/events: GET
        • cluster/filesystems/health/events: GET
        • cluster/filesystems/afmFilesets/health/state: GET
        • cluster/filesystems/health/state: GET
      • Clustered watch endpoints
        • Filesystems/{filesystemName}/filesets/{filesetName}/watch: PUT
        • Filesystems/{filesystemName}/watch: PUT
        • Filesystems/{filesystemName}/watches: GET
      • Diagnostic data endpoints
        • Diagnostic/snap: GET
        • Diagnostic/snap: POST
        • Diagnostic/snap/{snapPath}: GET
        • Diagnostic/snap/{snapPath}/pmr/{pmrID}: PUT
        • Diagnostic/snap/{snapPath}: DELETE
      • Disk management endpoints
        • Diskmgmt/vdiskset/server/list/{nodeClass}: GET
      • Encryption endpoints
        • Encryption/clients: GET
        • Encryption/keys: GET
        • Encryption/servers: GET
        • Encryption/rkms: GET
        • Encryption/tenants: GET
        • Encryption/clients/deregister: PUT
        • Encryption/clients: PUT
        • Encryption/servers: PUT
        • Encryption/servers: POST
        • Encryption/tenants: POST
        • Encryption/keys: POST
        • Encryption/clients: POST
        • Encryption/clients/register: POST
        • Encryption/clients/{clientName}: DELETE
        • Encryption/tenants: DELETE
        • Encryption/servers/{serverName}: DELETE
      • File audit logging endpoints
        • Cliauditlog: GET
      • File system endpoints
        • filesystems/{filesystemName}/filePath/{filePath}/diagnostic: POST
        • Filesystems/{filesystemName}/directory/snapDir: GET
        • Filesystems/{filesystemName}/restripefs: PUT
        • Filesystems/{filesystemName}/suspend: PUT
        • Filesystems/{filesystemName}/resume: PUT
        • Filesystems/{filesystemName}/maintenanceMode/{maintenanceModeOption}: PUT
        • Filesystems: GET
        • Filesystems/{filesystemName}: GET
        • Filesystems/{filesystemName}/directory/{path}: GET
        • Filesystems/{filesystemName}/audit: PUT
        • Filesystems/{filesystemName}/directory/{path}: POST
        • Filesystems/{filesystemName}/directory/{path}: DELETE
        • Filesystems/{filesystemName}/directoryCopy/{sourcePath}: PUT
        • Filesystems/{filesystemName}/disks: GET
        • Filesystems/{filesystemName}/disks/{diskName}: GET
        • Filesystems/{filesystemName}/mount: PUT
        • Filesystems/{filesystemName}/owner/{path}: GET
        • Filesystems/{filesystemName}/owner/{path}: PUT
        • Filesystems/{filesystemName}/policies: GET
        • Filesystems/{filesystemName}/policies: PUT
        • Filesystems/{filesystemName}/pools/{poolName}: GET
        • Filesystems/{filesystemName}/pools: GET
        • Filesystems/{filesystemName}/symlink/{linkpath}: POST
        • Filesystems/{filesystemName}/symlink/{path}: DELETE
        • Filesystems/{filesystemName}/unmount: PUT
        • usermgmt/changepassword: PUT
      • Fileset endpoints
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/downloadStats: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/uploadStats: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshots/latest: GET
        • Filesystems/{filesystemName}/filesets: GET
        • Filesystems/{filesystemName}/filesets: POST
        • Filesystems/{filesystemName}/filesets/cos: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetName}: GET
        • Filesystems/{filesystemName}/filesets/{filesetName}: PUT
        • Filesystems/{filesystemName}/filesets/{filesetName}/afmctl: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/directory: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/download: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/evict: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/cos/upload: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/directory/{path}: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/directory/{path}: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetName}/directoryCopy/{sourcePath}: PUT
        • Filesystems/{filesystemName}/filesets/{filesetName}/link: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetName}/link: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/symlink/{linkpath}: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/symlink/{path}: DELETE
      • GPFS tracing endpoints
        • Gpfs/trace/list: GET
        • Gpfs/trace/status: GET
        • Gpfs/trace/set: PUT
        • Gpfs/trace/start: POST
        • Gpfs/trace/stop: PUT
        • Gpfs/trace/{snapPath}: GET
        • Gpfs/trace/{snapPath}: DELETE
      • Health management endpoints
        • Health/config/{interval}: PUT
        • Health/config/monitor/pause/{node}: PUT
        • Health/config/monitor/resume/{node}: PUT
      • Loopback device endpoints
        • Filesystems/{filesystemPath}/loopbackDevice/attach/{fileName}/nodes/{name}: POST
        • Filesystems/{filesystemPath}/loopbackDevice/detach/{fileName}/nodes/{name}: DELETE
        • Filesystems/{filesystemPath}/loopbackDevice/{fileName}/nodes/name}: GET
      • NFS export endpoints
        • NFS/exports: GET
        • NFS/exports: POST
        • NFS/exports/{exportPath}: GET
        • NFS/exports/{exportPath}: PUT
        • NFS/exports/{exportPath}: DELETE
      • Nodes and nodeclass endpoints
        • Nodeclasses: GET
        • Nodes/network: POST
        • Nodeclasses: POST
        • Nodeclasses/{nodeclassName}: GET
        • Nodeclasses/{nodeclassName}: DELETE
        • Nodeclasses/{nodeclassName}: PUT
        • Nodes/{name}/info/deadlock: GET
        • Nodes/{name}/info/memory: GET
        • Nodes/{name}/info/iohist: GET
        • Nodes/{name}/info/waiters: GET
        • Nodes: GET
        • Nodes: POST
        • Nodes/afm/mapping: GET
        • Nodes/afm/mapping: POST
        • Nodes/afm/mapping: DELETE
        • Nodes/afm/mapping/{mappingName}: GET
        • Nodes/afm/mapping/{mappingName}: PUT
        • Nodes/{name}: DELETE
        • Nodes/{name}: GET
        • Nodes/{name}: PUT
        • Nodes/{name}/health/events: GET
        • Nodes/{name}/health/states: GET
        • Nodes/{name}/services: GET
        • Nodes/{name}/services/{serviceName}: GET
        • Nodes/{name}/services/{serviceName}: PUT
      • NSD endpoints
        • NSDs: GET
        • NSDs/{nsdName}: GET
      • Performance monitoring endpoints
        • Perfmon/data: GET
        • Querying performance data by using /perfmon/data request
        • Perfmon/sensors/{sensorName}: GET
        • Perfmon/sensors: GET
        • Perfmon/sensors/{sensorName}: PUT
      • Quota Management endpoints
        • Filesystems/{filesystemName}/filesets/{filesetName}/quotadefaults: GET
        • Filesystems/{filesystemName}/filesets/{filesetName}/defaultquotas: PUT
        • Filesystems/{filesystemName}/filesets/{filesetName}quotadefaults: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/quotas: GET
        • Filesystems/{filesystemName}/filesets/{filesetName}/quotas: POST
        • Filesystems/{filesystemName}/quotadefaults: GET
        • Filesystems/{filesystemName}/quotadefaults: PUT
        • Filesystems/{filesystemName}/quotadefaults: POST
        • Filesystems/{filesystemName}/quotagracedefaults: GET
        • Filesystems/{filesystemName}/quotagracedefaults: POST
        • Filesystems/{filesystemName}/quotamanagement: PUT
        • Filesystems/{filesystemName}/quotas: GET
        • Filesystems/{filesystemName}/quotas: POST
      • Remote mount endpoints
        • Remotemount/authenticationkey: GET
        • Remotemount/authenticationkey: POST
        • Remotemount/authenticationkey: PUT
        • Remotemount/owningclusters: GET
        • Remotemount/owningclusters: POST
        • Remotemount/owningclusters/{owningCluster}: DELETE
        • Remotemount/owningclusters/{owningCluster}: GET
        • Remotemount/owningclusters/{owningCluster}: PUT
        • Remotemount/remoteclusters: GET
        • Remotemount/remoteclusters: POST
        • Remotemount/remoteclusters/{remoteCluster}: DELETE
        • Remotemount/remoteclusters/{remoteCluster}: GET
        • Remotemount/remoteclusters/{remoteCluster}: PUT
        • Remotemount/remoteclusters/{remoteCluster}/access/{owningClusterFilesystem}: POST
        • Remotemount/remoteclusters/{remoteCluster}/access/{owningClusterFilesystem}: PUT
        • Remotemount/remoteclusters/{remoteCluster}/deny/{owningClusterFilesystem}: DELETE
        • Remotemount/remotefilesystems: GET
        • Remotemount/remotefilesystems: POST
        • Remotemount/remotefilesystems/{remoteFilesystem}: DELETE
        • Remotemount/remotefilesystems/{remoteFilesystem}: GET
        • Remotemount/remotefilesystems/{remoteFilesystem}: PUT
      • Snapshot endpoints
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshotCopy/{snapshotName}: PUT
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshotCopy/{snapshotName}/path/{sourcePath}: PUT
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshots: GET
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshots: POST
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshots/{snapshotName}: DELETE
        • Filesystems/{filesystemName}/filesets/{filesetName}/snapshots/{snapshotName}: GET
        • Filesystems/{filesystemName}/snapshotCopy/{snapshotName}: PUT
        • Filesystems/{filesystemName}/snapshotCopy/{snapshotName}/path/{sourcePath}: PUT
        • Filesystems/{filesystemName}/snapshots: GET
        • Filesystems/{filesystemName}/snapshots: POST
        • Filesystems/{filesystemName}/snapshots/{snapshotName}: DELETE
        • Filesystems/{filesystemName}/snapshots/{snapshotName}: GET
      • REST API Access endpoints
        • Access: POST
      • SMB share endpoints
        • SMB/shares: GET
        • SMB/shares/{shareName}: GET
        • SMB/shares: POST
        • SMB/shares/{shareName}: PUT
        • SMB/shares/{shareName}: DELETE
        • SMB/shares/{shareName}/acl: DELETE
        • SMB/shares/{shareName}/acl: GET
        • SMB/shares/{shareName}/acl/{name}: DELETE
        • SMB/shares/{shareName}/acl/{name}: GET
        • SMB/shares/{shareName}/acl/{name}: PUT
      • Threshold endpoints
        • Thresholds: GET
        • Thresholds: POST
        • Thresholds/{name}: DELETE
        • Thresholds/{name}: GET
      • Webhook event endpoints
        • Nodes/health/config/webhook/deleteEventWebhook: DELETE
        • Nodes/health/config/webhook/listEventWebhook: GET
        • Nodes/health/config/webhook/addEventWebhook: POST
  • IBM Storage Scale native REST API endpoints
    • AFM endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/afm/state: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm/checkdirty: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm/checkuncached: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm/flushqueue: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm/resumerequeued: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm/resync: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm/state: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm:resetlocal: PATCH
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm:setlocal: PATCH
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm:start: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afm:stop: POST
    • AFMCOS endpoints
      • /scalemgmt/v3/buckets/{bucket_name}/afmcos/delcoskeys: DELETE
      • /scalemgmt/v3/buckets/{bucket_name}/afmcos/getcoskeys: GET
      • /scalemgmt/v3/buckets/{bucket_name}/afmcos/setcoskeys: PUT
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afmcos/configure: PUT
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afmcos/delete: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afmcos/download: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afmcos/evict: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afmcos/reconcile: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/afmcos/upload: PUT
    • API-health endpoints
      • /scalemgmt/v3/apihealth: GET
      • /scalemgmt/v3/apihealth/{node_name}: GET
    • Authorization endpoints
      • /scalemgmt/v3/authorization/cani: POST
      • /scalemgmt/v3/authorization/cani:impersonate: POST
      • /scalemgmt/v3/authorization/domains: GET
      • /scalemgmt/v3/authorization/domains: POST
      • /scalemgmt/v3/authorization/domains/{name}: GET
      • /scalemgmt/v3/authorization/domains/{name}: DELETE
      • /scalemgmt/v3/authorization/domains/{name}: PATCH
      • /scalemgmt/v3/authorization/module: GET
      • /scalemgmt/v3/authorization/module: PATCH
    • Cluster endpoints
      • /scalemgmt/v3/clusters: GET
      • /scalemgmt/v3/clusters: POST
      • /scalemgmt/v3/clusters:migrate: POST
      • /scalemgmt/v3/clusters/trust: GET
    • Configuration endpoints
      • /scalemgmt/v3/config/admin: GET
      • /scalemgmt/v3/config/admin/{name}: GET
      • /scalemgmt/v3/config/admin:batchUpdate: PATCH
      • /scalemgmt/v3/config/cluster: GET
      • /scalemgmt/v3/config/cluster/{name}: GET
      • /scalemgmt/v3/config/cluster:batchUpdate: PATCH
    • Diagnostics endpoints
      • /scalemgmt/v3/nodes/{node}/diagnostics/version: GET
    • File system endpoints
      • /scalemgmt/v3/filesystems: GET
      • /scalemgmt/v3/filesystems: POST
      • /scalemgmt/v3/filesystems/{filesystem}: GET
      • /scalemgmt/v3/filesystems/{filesystem}:mount: GET
      • /scalemgmt/v3/filesystems/{filesystem}:mount: POST
      • /scalemgmt/v3/filesystems/{filesystem}:unmount: POST
      • /scalemgmt/v3/filesystems/{name}: DELETE
      • /scalemgmt/v3/filesystems/{name}: PATCH
      • /scalemgmt/v3/filesystems:mount: POST
      • /scalemgmt/v3/filesystems:unmount: POST
      • /scalemgmt/v3/filesystems/{filesystem}:rebalance: POST
      • /scalemgmt/v3/filesystems/{filesystem}:restripe: POST
      • /scalemgmt/v3/filesystems/{fs_name}/directory/{dirpath}:stat: GET
      • /scalemgmt/v3/filesystems/{fs_name}/directory/{dirpath}: POST
      • /scalemgmt/v3/filesystems/{fs_name}/directory/{dirpath}: GET
      • /scalemgmt/v3/filesystems/{fs_name}/directory/{dirpath}: DELETE
    • File system disk endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/disks: GET
      • /scalemgmt/v3/filesystems/{filesystem}/disks: POST
      • /scalemgmt/v3/filesystems/{filesystem}/disks/{disk_name}: GET
      • /scalemgmt/v3/filesystems/{filesystem}/disks/{disk_name}: DELETE
      • /scalemgmt/v3/filesystems/{filesystem}/disks:batchAdd: POST
      • /scalemgmt/v3/filesystems/{filesystem}/disks:batchDelete: POST
      • /scalemgmt/v3/filesystems/{filesystem}/disksquorum: GET
    • Fileset endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/filesets: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset_name}: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset_name}: DELETE
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset_name}: PATCH
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset_name}/usage: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset_name}:link: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset_name}:unlink: POST
    • Manager endpoints
      • /scalemgmt/v3/clusters/manager: POST
      • /scalemgmt/v3/filesystems/{name}/manager: POST
    • Node endpoints
      • /scalemgmt/v3/nodes: POST
      • /scalemgmt/v3/nodes:batchAdd: POST
      • /scalemgmt/v3/nodes:start: POST
      • /scalemgmt/v3/nodes/status: GET
      • /scalemgmt/v3/nodes:stop: POST
      • /scalemgmt/v3/nodes/config: GET
    • XCP operation endpoints
      • /scalemgmt/v3/xcp: GET
      • /scalemgmt/v3/xcp/config: GET
      • /scalemgmt/v3/xcp/config: PATCH
      • /scalemgmt/v3/xcp/{id}: GET
      • /scalemgmt/v3/xcp:enable: PATCH
      • /scalemgmt/v3/xcp:sync: PATCH
      • /scalemgmt/v3/xcp:verify: PATCH
    • Node class endpoints
      • /scalemgmt/v3/nodeclasses: GET
      • /scalemgmt/v3/nodeclasses: POST
      • /scalemgmt/v3/nodeclasses/{name}: GET
      • /scalemgmt/v3/nodeclasses/{name}: DELETE
      • /scalemgmt/v3/nodeclasses/{name}: PATCH
    • NSD endpoints
      • /scalemgmt/v3/nsds: GET
      • /scalemgmt/v3/nsds: POST
      • /scalemgmt/v3/nsds/{nsd_name}: GET
      • /scalemgmt/v3/nsds/{nsd_name}: DELETE
      • /scalemgmt/v3/{nsd_name}: PATCH
      • /scalemgmt/v3/nsds:batchCreate: POST
      • /scalemgmt/v3/nsds:batchDelete: POST
    • Operations endpoints
      • /scalemgmt/v3/operations: GET
      • /scalemgmt/v3/operations/{id}: GET
      • /scalemgmt/v3/operations/{id}: DELETE
      • /scalemgmt/v3/operations/{id}/output: GET
      • /scalemgmt/v3/operations/{id}:cancel: POST
    • Policy endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/policy: GET
      • /scalemgmt/v3/filesystems/{filesystem}/policy: PATCH
    • Quota endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/quotas: GET
      • /scalemgmt/v3/filesystems/{filesystem}/quotas: PUT
      • /scalemgmt/v3/filesystems/{filesystem}/quotas: POST
      • /scalemgmt/v3/filesystems/{filesystem}/quotas/config: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/quotas: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/quotas: PUT
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/quotas: POST
    • Remote cluster endpoints
      • /scalemgmt/v3/clusters/remote: GET
      • /scalemgmt/v3/clusters/remote: POST
      • /scalemgmt/v3/clusters/remote/authorized: POST
      • /scalemgmt/v3/clusters/remote/authorized/{name}: DELETE
      • /scalemgmt/v3/clusters/remote/{name}: GET
      • /scalemgmt/v3/clusters/remote/{name}: DELETE
      • /scalemgmt/v3/clusters/remote/{name}: PATCH
      • /scalemgmt/v3/clusters/remote/{name}/refresh: POST
    • Remote file system endpoints
      • /scalemgmt/v3/filesystems/remote: POST
      • /scalemgmt/v3/filesystems/remote/{filesystem}: DELETE
      • /scalemgmt/v3/filesystems/remote/{filesystem}: PATCH
    • Snapshot endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/snapshots: GET
      • /scalemgmt/v3/filesystems/{filesystem}/snapshots: POST
      • /scalemgmt/v3/filesystems/{filesystem}/snapshots/{snapshot_name}: GET
      • /scalemgmt/v3/filesystems/{filesystem}/snapshots/{snapshot_name}: DELETE
      • /scalemgmt/v3/filesystems/{filesystem}/snapshots:snapdir: GET
      • /scalemgmt/v3/filesystems/{filesystem}/snapshots:batchDelete: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/snapshots:batchCreate: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/snapshots:batchDelete: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/snapshots: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/snapshots: POST
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/snapshots/{snapshot_name}: GET
      • /scalemgmt/v3/filesystems/{filesystem}/filesets/{fileset}/snapshots/{snapshot_name}: DELETE
    • Storage pool endpoints
      • /scalemgmt/v3/filesystems/{filesystem}/storagepools: GET
      • /scalemgmt/v3/filesystems/{filesystem}/storagepools/{pool_name}: GET
      • /scalemgmt/v3/filesystems/{filesystem}/storagepools/{pool_name}: PATCH
    • Troubleshooting endpoints
      • /scalemgmt/v3/troubleshooting/persistentReserve/{device}/keys: GET
      • /scalemgmt/v3/troubleshooting/persistentReserve/{device}/keys: DELETE
      • /scalemgmt/v3/troubleshooting/nsds/clearID: DELETE
    • Version endpoints
      • /scalemgmt/v3/version: GET
  • Considerations for GPFS applications
    • Exceptions to Open Group technical standards
    • Determining if a file system is controlled by GPFS
    • Considerations for the use of direct I/O (O_DIRECT)
    • Considerations for the mmap usage
• Glossary
• IBM Storage Scale Big Data and Analytics Support
• IBM Storage Scale Container Native 6.0.1
• IBM Storage Scale Container Storage Interface 3.1.x
• IBM Storage Scale Erasure Code Edition 6.0.1
• Library and related publications
  • Product documentation in guide format
  • Redbooks, Redpapers, and Blueprints
  • Applying IBM Storage Scale
    • Active File Management (AFM)
      • Data sharing between central and branch offices
      • Data consolidation by using AFM
      • File system migration from the legacy hardware by using AFM
        • Data migration by using AFM migration enhancements
      • Examples of using IBM Spectrum Protect for Space Management on AFM filesets
        • Cache and migrate a file from RO fileset
        • Update from home on cached/migrated file in RO fileset
        • Rename from home for cached/migrated file in RO fileset
        • Read migrated file from RO fileset
        • Truncating a migrated file from SW fileset
        • Truncating a pre-migrated file from SW fileset
        • Delete a migrated file from SW fileset
        • Copy a migrated file from SW fileset
        • IW failback with pre-migrated file at cache and data update during application failover at home
      • Changing target protocol of SW/IW filesets
    • AFM-based Disaster Recovery
      • Creating new primary-secondary filesets, failover and failback to old primary
      • Convert GPFS-independent filesets to AFM DR, failover to secondary and failback to a new primary by using the outband trucking method
      • Changing target protocol for AFM filesets
      • Failback of multiple filesets
      • Examples of using IBM Spectrum Protect for Space Management on DR filesets
        • Read a migrated file from acting primary after failover
        • Write to a migrated file from acting primary after failover
        • Read a resident file from acting primary after failover
        • Failback with migrated file on old primary and no change from acting primary
        • Failback with migrated file on old primary and no change from acting primary
        • Failback with migrated file on old primary and update contents from acting primary
        • Failback with resident file on old primary and no changes from acting primary
        • Failback with pre-migrated file on old primary and no changes from acting primary
        • Failback with pre-migrated file on old primary and no changes from acting primary
        • Failback with new file in pre-migrated state on acting primary
      • Changing target protocol of primary filesets
      • Role reversal
    • Big Data and Analytics
    • Cloud
    • Configuration of an IBM Storage Scale stretch cluster in an export services environment: a sample use case
    • Examples to set up the AFM to cloud object storage
    • File and Object Storage
    • HyperScale Converged Solutions
    • Quality of service
      • QoS classification
      • Core QoS objects
        • QoS classes
        • Throttles for QoS classes
      • QoS operation
      • File-system-level QoS
      • QoS deployment guidelines
      • Workflows for QoS classes
      • QoS limitations
      • Examples of QoS configurations
      • IBM Storage Scale commands that are used for QoS maintenance
      • Analyzing fine-grained output from the mmqos report list command
      • Analyzing regular output from the mmqos report list command
    • Storage for Information Management Systems
    • Supported cloud data sharing use cases
    • Supported Write Once Read Many (WORM) storage use cases
    • Transparent cloud tiering
    • Using AFM with object
  • IBM Storage Community
• Notices
  • EU Data Act (Regulation 2023/2854)
• IBM Storage Scale FAQ