Introduction to Active File Management |
Introduction to Active File Management (AFM) |
An overview of AFM and description of the concepts- Cache and Home
- Communication between cache and home
- The backend protocol - NFS versus NSD
- Primary gateway
- Global namespace
- Caching modes
- Revalidation
- Cached and uncached files
- Asynchronous delay
- Synchronous or asynchronous operations
- Operations with AFM modes
- Fileset to the same home target
- Conversion of mode
- Internal AFM Directories
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Overview and concepts
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Features of AFM- Force flushing contents before Async Delay
- Parallel data transfers
- 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
- Failover
- Resync on SW filesets
- Using IBM Spectrum Protect™ for Space Management (HSM)
- Handling IW cache disaster
- Disabling AFM
- Using AFM with encryption
- Using mmbackup
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Active File Management (AFM) features
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AFM limitations |
AFM Limitations |
To know how to install AFM- Installation and upgrade of Active File Management (AFM)
- Requirements for UID and GID on the cache and home clusters
- Recommended worker1threads on cache cluster
- Inode limits to set at cache and home
- Creating an AFM relationship by using the NFS protocol
- Creating an AFM relationship by using GPFS protocol
- Configuration changes in an existing AFM relationship
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Installing Active File Management
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To know how to configure AFM- Configuration parameters for AFM
- Parallel I/O configuration parameters for AFM
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Configuring Active File Management
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To know how to tune for NFS backend |
Tuning for Kernel NFS backend on AFM and AFM DR |
To know how to monitor AFM filesets- Fileset states for AFM
- Monitor with mmhealth
- Callback events for AFM
- Commands for monitoring AFM and AFM DR
- Monitor with mmperfmon
- Monitor prefetch
- Monitor with mmdiag
- Policies used for monitoring AFM
- Monitor using GUI
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Monitoring AFM and AFM DR
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Common questions with their resolutions |
AFM issues |
To know how AFM is deployed effectively (Use cases) |
Active File Management (AFM) |
Commands |
mmafmctl command
mmafmlocal command
mmafmconfig command
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