IBM Support

V8.4.0.x Configuration Limits and Restrictions for IBM FlashSystem 9200

Preventive Service Planning


Abstract

This document lists the configuration limits and restrictions specific to IBM FlashSystem 9200 software version 8.4.0.x

Content

The use of WAN optimisation devices such as Riverbed are not supported in native Ethernet IP partnership configurations containing FlashSystem 9200 enclosures.


Data Reduction Pools
The following restrictions apply for Data Reduction Pools (DRP):

  1. VMware vSphere Virtual Volumes (vVols) are not supported in a DRP;
  2. A volume in a DRP cannot be shrunk;
  3. No volume move between I/O groups if volume in a DRP (use FlashCopy or Metro Mirror/Global Mirror instead);
  4. No split of a volume mirror to copy in a different I/O group;
  5. Real/used/free/free/tier capacity are not reported per volume - only per pool.

RAID and Distributed RAID
FlashSystem 9200 systems support DRAID1, DRAID5, DRAID6, TRAID0, TRAID1 and TRAID10. For compressed drives only DRAID1, DRAID5 and DRAID6 are supported.


DRAID1
DRAID1 is only supported for pools with extent size of 1024MiB or greater.

FCM XL drives are not supported by DRAID1.


DRAID Strip Size
For candidate drives, with a capacity greater than 4TB, a strip size of 128 cannot be specified for either RAID-5 or RAID-6 DRAID arrays. For these drives a strip size of 256 should be used.


Non-Disruptive Volume Move (NDVM)
The following Fibre Channel attached host types are supported for non-disruptively moving a volume between I/O groups (control enclosures):

Host Operating System Host Multipathing Host Clustering Notes
AIX 7.2 AIXPCM
Non-disruptive volume move may result in the same volume being mapped to different hosts in the same host cluster using different SCSI IDs. If the host cluster cannot tolerate this configuration then non-disruptive volume move cannot be used.
SAN boot is supported
NPIV is supported
Microsoft Windows 2019 MSDSM
Hyper-V Failover Cluster
SAN boot is supported
Microsoft Windows 2016 MSDSM
Hyper-V Failover Cluster
SAN Boot is supported
RedHat 8 Native
The original paths may need to be manually removed on the host after removing access to the old I/O group
SLES 15 Native The original paths may need to be manually removed on the host after removing access to the old I/O group
VMware 6.7 Native VAAI is supported
VMware 6.5 Native VAAI is supported
Solaris 11.3 SPARC MPXIO SAN boot is supported

Note: For all other host types, I/O should be quiesced when moving a volume.

When moving a volume that is mapped to a host cluster then you must rescan disk paths on all host cluster nodes to ensure the new paths have been detected before removing access from the original I/O group.


Clustered Systems
A FlashSystem 9200 system requires native Fibre Channel SAN or alternatively 16Gbps/32Gbps Direct Attach Fibre Channel connectivity for communication between all nodes in the local cluster. Please note that support for 32Gbps direct attachment requires a RPQ. Clustering can also be accomplished with 25Gbps Ethernet, for standard topologies. For HyperSwap topologies a SCORE request will be required. Please contact your IBM representative to raise a SCORE request.

Partnerships between systems for Metro Mirror or Global Mirror replication can be used with both Fibre Channel and Native Ethernet connectivity. Distances greater than 300 metres are only supported when using an FCIP link or Fibre Channel between source and target.

Clustering over Fibre Channel Clustering over 25Gb Ethernet HyperSwap over Fibre Channel HyperSwap over Ethernet (25Gb only) Metro/Global Mirror replication over Fibre Channel Metro/Global Mirror replication over Ethernet (10Gb or 25Gb)
Yes up to 4 I/O groups Yes up to 4 I/O groups Yes up to 4 I/O groups Yes up to 4 I/O groups Yes Yes


Transparent Cloud Tiering
Transparent cloud tiering on the system is defined by configuration limitations and rules. Please see the IBM Documentation maximum limits page for details.

The following restrictions apply for Transparent Cloud Tiering:

  1. When a cloud account is created, it must continue to use the same encryption type, throughout the life of the data in that cloud account - even if the cloud account object is removed and remade on the system, the encryption type for that cloud account may not be changed while back up data for that system exists in the cloud provider.
  2. When performing re-key operations on a system that has an encryption enabled cloud account, perform the commit operation immediately after the prepare operation. Remember to retain the previous system master key (on USB or in Keyserver) as this key may still be needed to retrieve your cloud backup data when performing a T4 recovery or an import.
  3. Restore_uid option should not be used when backup is imported to a new cluster.
  4. Import of TCT data is only supported from systems whose backup data was created at v7.8.0.1 or later.
  5. Transparent cloud tiering uses Sig V2, when connecting to Amazon regions, and does not currently support regions that require Sig V4.


Encryption and TCT
There is an extremely small possibility that, on a system using both Encryption and Transparent Cloud Tiering, the system can enter a state where an encryption re-key operation is stuck in 'prepared' or 'prepare_failed' state, and a cloud account is stuck in 'offline' state.
The user will be unable to cancel or commit the encryption rekey, because the cloud account is offline. The user will be unable to remove the cloud account because an encryption rekey is in progress.
The system can only be recovered from this state using a T4 Recovery procedure.
It is also possible that SAS-attached storage arrays go offline.
There are two possible scenarios where this can happen:

Scenario A

  1. Using USB encryption and Cloud;
  2. A new USB key is prepared using chencryption -usb newkey -key prepare;
  3. The new presumptive key is deleted from all USB sticks before the new key is committed;
  4. All nodes in the system are rebooted;
  5. The cloud account will now be offline as it can't get the presumptive key. The cloud account can not be removed, and the encryption rekey can not be completed or cancelled. The system will remain stuck in these cloud and encryption states;
  6. Any SAS-attached arrays will be offline and locked;
  7. The system can be restored by T4 to a previous config backup.

Scenario B

  1. Using key server encryption and Cloud;
  2. A new key server key is prepared using chencryption -keyserver newkey -key prepare;
  3. The new presumptive key is deleted from the key server before the new key is committed;
  4. All nodes in the system are rebooted;
  5. The cloud account will now be offline as it can't get the presumptive key. The cloud account can not be removed, and the encryption rekey can not be completed or cancelled. The system will remain stuck in these cloud and encryption states;
  6. SAS-attached arrays are not affected;
  7. The system can be restored by T4 to a previous config backup.


NPIV ( N_Port ID Virtualization )

The following recommendations and restrictions should be followed when implementing the NPIV feature.

FCoE is not supported with NPIV.

Operating systems not currently supported for use with NPIV:

  • HPUX 11iV2
  • Veritas DMP multipathing on Windows with RAID-5 volumes in VxVM

Other Operating Systems
Other operating Systems may also experience the same issue when changing the NPIV state from "Transitional" to "Disabled" in which case the operating system specific rescan command should be used.

Fabric Attachment
NPIV mode on SVC or Storwize is only supported when used with Brocade or Cisco fibre channel SAN switches which are NPIV capable.


Node Memory
Nodes in an I/O group cannot be replaced by nodes with less memory when compressed volumes are present

If a customer must migrate from 64GB to 32GB memory node canisters in an I/O group, they will have to remove all compressed volume copies in that I/O group.

A customer must not:

  1. Create an I/O group with node canisters with 64GB of memory.
  2. Create compressed volumes in that I/O group.
  3. Delete both node canisters from the system with CLI or GUI.
  4. Install new node canisters with 32GB of memory and add them to the configuration in the original I/O group with CLI or GUI.


HyperSwap

When using the HyperSwap function please configure your host multipath driver to use an ALUA-based path policy.

Due to the requirement for multiple access IO groups, SAS attached host types are not supported with HyperSwap volumes.

A volume configured with multiple access I/O groups, on a system in the storage layer, cannot be virtualized by a system in the replication layer.  This restriction prevents a HyperSwap volume on one system being virtualized by another.

AIX Live Partition Mobility (LPM)
AIX LPM is supported with the HyperSwap function and AIX 7.


Fibre Channel Canister Connection

Please visit the IBM System Storage Inter-operation Center (SSIC) for Fibre Channel configurations supported with node HBA hardware.

Auto-negotiation with 32, 16 and 8Gbps networks is supported.

Note 16Gbps Node hardware is supported when connected to Brocade and Cisco 8Gbps or 16Gbps fabrics only.

Direct connections to 2Gbps or 4Gbps SAN or direct host attachment to 2Gbps or 4Gbps ports is not supported.

Other configured switches which are not directly connected to node HBA hardware can be any supported fabric switch as currently listed in SSIC.


25Gbps Ethernet Canister Connection

Two optional 2-port 25Gbps Ethernet adapter is supported in each node canister for iSCSI communication with iSCSI capable Ethernet ports in hosts via Ethernet switches. These 2-port 25Gbps Ethernet adapters do not support FCoE.

There are two types of 25Gbps Ethernet adapter feature supported:

  1. RDMA over Converged Ethernet (RoCE)
  2. Internet Wide-area RDMA Protocol(iWARP)

Either will work for standard iSCSI communications, i.e. not using Remote Direct Memory Access (RDMA). A future software release will add (RDMA) links using new protocols that support RDMA such as NVMe over Ethernet.

When use of RDMA with a 25Gbps Ethernet adapter becomes possible then RDMA links will only work between RoCE ports or between iWARP ports.
i.e. from a RoCE node canister port to a RoCE port on a host or from an iWARP node canister port to an iWARP port on a host.

The 25Gbps adapters come with SFP28 fitted, which can be used to connect to switches using OM3 optical cables.

For Ethernet switches and adapters supported in hosts please visit the SSIC .

This is an example of a RoCE adapter for use in a host.
https://docs.nvidia.com/networking/display/cx4lxen

This is an example of a iWARP adapter for use in a host.
https://www.chelsio.com/nic/unified-wire-adapters/t6225-cr/


IP Partnership

IP partnerships are supported on any of the available ethernet ports. Using an Ethernet switch to convert a 25Gb to a 1Gb IP partnership, or a 10Gb to a 1Gb IP partnership is not supported. Therefore the IP infrastructure on both partnership sites must match. Bandwidth limiting on IP partnerships between both sites is supported.


VMware vSphere Virtual Volumes (vVols)

The maximum number of Virtual Machines on a single VMware ESXi host in a FlashSystem 9200 / vVol storage configuration is limited to 680.

The use of VMware vSphere Virtual Volumes (vVols) on a system that is configured for HyperSwap is not currently supported with the FlashSystem 9200 family.


REST API

It is not possible to access the REST API using a cluster's IPv6 address.


Host Limitations

SAN BOOT function on AIX 7.2 TL5
SAN BOOT is not supported for AIX 7.2 TL5 when connected using the NVME/FC protocol.

RDM Volumes attached to guests in VMware 7.0
Using RDM (raw device mapping) volumes attached to any guests, with the RoCE iSER protocol, results in pathing issues or inability to boot the guest.

N2225/N2226 SAS HBA
VMware 6.7 (Guest O/S SLES12SP4) connected via SAS N2225/N2226 host adapters are not supported.

Lenovo 430-16e/8e SAS HBA
VMware 6.7 and 6.5 (Guest O/S SLES12SP4) connected via SAS Lenovo 430-16e/8e host adapters are not supported.
Windows 2019 and 2016 connected via SAS Lenovo 430-16e/8e host adapters are not supported.

Windows 2016 HyperV
RHEL v7.1 guests on Windows 2016 HyperV, with Virtual Fibre Channel, are not supported.

iSER
Operating systems not currently supported for use with iSER:

  • Windows 2012 R2 using Mellanox ConnectX-4 Lx EN
  • Windows 2016 using Mellanox ConnectX-4 Lx EN

Windows NTP server 
The Linux NTP client used by SAN Volume Controller may not always function correctly with Windows W32Time NTP Server


Fabric Limitations

Only one FCF ( Fibre Channel Forwarder ) switch per fabric is supported.

Storage connected directly to a Cisco Fabric Extender (FEX) is not supported.


Priority Flow Control for iSCSI/iSER

Priority Flow Control for iSCSI/ iSER is supported on Emulex & Chelsio adapters (SVC supported) with all DCBX enabled switches.


Maximum Configurations

Configuration limits for FlashSystem 9200 family:

Property
Context
Maximum Number
Comments
System (Cluster) Properties
Control enclosures per system (cluster)
4
Each control enclosure contains two node canisters
Nodes per system
8
Arranged as four I/O groups
Nodes per fabric
64
Maximum number of FS9200 family system nodes that can be present on the same Fibre Channel fabric, with visibility of each other
Fabrics per system
8
The number of counterpart SANs which are supported
Inter-cluster partnerships per system
3
A system may be partnered with up to three remote systems. No more than four systems may be in the same connected set
IP Quorum devices per system
5
Data encryption keys per system
1024
Node Properties 
Logins per node Fibre Channel WWPN
512
Includes logins from server HBAs, disk controller ports, node ports within the same system and node ports from remote systems
Fibre Channel buffer credits per port
4095
The number of credits granted by the switch to the node
iSCSI sessions per node
1024
2048 in IP failover mode (when partner node is unavailable).
This limit includes both iSCSI Host Attach AND iSCSI Initiator sessions
iSER sessions per node
256
Managed Disk Properties 
Managed disks (MDisks) per system
4096
The maximum number of logical units which can be managed by a system, including internal arrays.

Internal distributed arrays consume 16 logical units.

This number also includes external MDisks which have not been configured into storage pools (managed disk groups)
Managed disks per storage pool (managed disk group)
128
Storage pools per system
1024
Parent pools per system
128
Child pools per system
1023
Managed disk extent size
8192 MB
Capacity for an individual internal managed disk (array)
-
No limit is imposed beyond the maximum number of drives per array limits.
Maximum size is dependent on the extent size of the Storage Pool.
Comparison Table: Maximum Volume, MDisk and System capacity for each extent size.
Capacity for an individual external managed disk
1 PB
Note: External managed disks larger than 2 TB are only supported for certain types of storage systems. Refer to the supported hardware matrix for further details.
Maximum size is dependent on the extent size of the Storage Pool.
Comparison Table: Maximum Volume, MDisk and System capacity for each extent size.
Total storage capacity manageable per system
32 PB
Maximum requires an extent size of 8192 MB to be used

This limit represents the per system maximum of 2^22 extents.

Comparison Table: Maximum Volume, MDisk and System capacity for each extent size.
Data Reduction Pool Properties
Data Reduction Pools per system
4
Mdisks per Data Reduction Pool
128
Volumes per Data Reduction Pool
10000 - (Number of Data Reduction Pools x 12)
Extents per I/O group per Data Reduction Pool
128000
Volume (Virtual Disk) Properties
Basic Volumes (VDisks) per system
10000
Each Basic Volume uses 1 VDisk, each with one copy.
HyperSwap volumes per system
2000
Each HyperSwap volume uses 4 VDisks, each with one copy, 1 active-active remote copy relationship and 4 FlashCopy mappings.
Volumes per I/O group
(volumes per caching I/O group)
10000
Thin-provisioned (space-efficient) volume copies in regular pools per system
-
No limit is imposed here beyond the volume copies per system limit.
Compressed volume copies in data reduction pools per system
-
No limit is imposed here beyond the volume copy limit per data reduction pool
Compressed volume copies in data reduction pools per I/O group
-
No limit is imposed here beyond the volume copy limit per data reduction pool
Deduplicated volume copies in data reduction pools per system
-
No limit is imposed here beyond the volume copy limit per data reduction pool
Deduplicated volume copies in data reduction pools per I/O group
-
No limit is imposed here beyond the volume copy limit per data reduction pool
Volumes per storage pool
-
No limit is imposed beyond the volumes per system limit
Fully-allocated volume capacity
256 TB
Maximum size for an individual fully-allocated volume.

Maximum size is dependent on the extent size of the Storage Pool.
Comparison Table: Maximum Volume, MDisk and System capacity for each extent size.
Thin-provisioned (space-efficient) per-volume capacity for volumes copies in regular and data reduction pools
256 TB
Maximum size for an individual thin-provisioned volume.

Maximum size is dependent on the extent size of the Storage Pool.
Comparison Table: Maximum Volume, MDisk and System capacity for each extent size.
HyperSwap volume capacity in a single I/O group using RAID
850 TiB
This is due to the limit on bitmap space for mirroring and replication in each I/O group.
See the IBM Documentation for details.
Host mappings per system
64000
See also - volume mappings per host object below
Mirrored Volume (Virtual Disk) Properties 
Copies per volume
2
Volume copies per system
10000
Total mirrored volume capacity per I/O group
1024 TB
Host Properties 
Host objects (IDs) per system
2048
A host object may contain both Fibre Channel ports and iSCSI names
Host objects (IDs) per I/O group
512
Refer to the additional Fibre Channel and iSCSI host limits below
Volume mappings per host object
2048
Although IBM FlashSystem 9200 allows the mapping of up to 2048 volumes per host object, not all hosts are capable of accessing/managing this number of volumes. The practical mapping limit is restricted by the host OS, not IBM FlashSystem 9200.
Note: this limit does not apply to hosts of type adminlun (used to support VMware vVols).
Host Cluster Properties 
Host clusters per system
512
Hosts in a host cluster
128
Fibre Channel Host Properties 
Fibre Channel hosts per system
2048
Fibre Channel host ports per system
8192
Fibre Channel hosts per I/O group
512
Fibre Channel host ports per I/O group
2048
Fibre Channel host ports per host object (ID)
32
Simultaneous I/Os per node FC port
4096
iSCSI Host Properties 
iSCSI hosts per system
2048
iSCSI hosts per I/O group
512
iSCSI names per host object (ID)
4
iSCSI names per I/O group
512
iSCSI Hardware Properties 
10Gbps Ethernet ports per system
4
Onboard ports
iSER Host Properties 
iSER hosts per system
2048
iSER hosts per I/O group
512
iSER names per host object (ID)
4
iSER Hardware Properties 
25Gbps iWARP adapters per canister
3
25Gbps ROCE adapters per canister
3
25Gbps iWARP ports per canister
6
25Gbps ROCE ports per canister
6
NVMe over Fibre Channel Host Properties
FC-NVMe hosts per system
64
This limit is not policed by the Spectrum Virtualize software. Any configurations that exceed this limit may experience significant adverse performance impact.
FC-NVMe hosts per I/O group
16
This limit is not policed by the Spectrum Virtualize software. Any configurations that exceed this limit may experience significant adverse performance impact.
Fibre Channel Logins per FC-NVMe WWPN 16 These are the number of FC2 logins supported.
NVMe Qualified Names (NQNs) per host object (ID)
2
Copy Services Properties
Remote Copy (Metro Mirror and Global
Mirror) relationships per system
10000
This can be any mix of Metro Mirror and Global Mirror relationships.
Active-Active Relationships (HyperSwap) per system
2000
Remote Copy relationships per consistency group (<=256 GMCV relationships configured)
-
No limit is imposed beyond the Remote Copy relationships per system limit.

Refer to the Changes to support for Global Mirror with Change Volumes page for information relating to GMCV performance considerations and best practice.
Remote Copy relationships per consistency group (>256 GMCV relationships configured)
200
Remote Copy consistency
groups per system
256
Total Metro Mirror and Global Mirror volume capacity per I/O group
1024 TB
This limit is the total capacity for all master and auxiliary volumes in the I/O group.
Total number of Global Mirror with Change Volumes relationships per system
256
60s cycle time (Change volumes used for active-active relationships do not count towards this limit).
2500
300s cycle time (Change volumes used for active-active relationships do not count towards this limit).
FlashCopy mappings per system
10000
FlashCopy targets
per source
256
FlashCopy mappings
per consistency group
512
FlashCopy consistency
groups per system
500
Total FlashCopy volume capacity per I/O group
4096 TB
3-site Remote Copy (Metro Mirror) relationships per consistency group
256
3-site Remote Copy (Metro Mirror) consistency groups per system
16
3-site Remote Copy (Metro Mirror) relationships per system
1250
IP Partnership Properties 
Inter-cluster IP partnerships per system
1
A system may be partnered with up to three remote systems. A maximum of one of those can be IP and the other two FC.
I/O groups per system
2
The nodes from a maximum of two I/O groups per system can be used for IP partnership.
Inter site links per IP partnership
2
A maximum of two inter site links can be used between two IP partnership sites.
Ports per node
1
A maximum of one port per node can be used for IP partnership.
Internal Storage Properties
SAS chains per control enclosure
2
Expansion enclosures per SAS chain
10
Expansion enclosures per control enclosure
20
Drives per I/O group
760
Drives per system
3040
SCM drives per I/O group 12
Non-Distributed RAID Array Properties
Arrays per system
128
Encrypted arrays per system
128
Drives per array
16
Min-Max member drives per RAID-0 array
1-8
Min-Max member drives per RAID-1 array
2-2
Min-Max member drives per RAID-10 array
2-16
Min-Max member drives per RAID-10 array (tier SCM)
2-2
Hot spare drives
-
No limit is imposed
Distributed RAID Array Properties 
Arrays per system
32
The presence of non-DRAID arrays will reduce this limit
Encrypted arrays per system
32
The presence of non-DRAID arrays will reduce this limit
Arrays per I/O group
10
The presence of non-DRAID arrays will reduce this limit
Drives per array
128
Drives per array (RAID-1)
16
Min-Max member drives per RAID-5 array
4-128
Min-Max member drives per RAID-5 array (tier SCM)
4-4
Min-Max member drives per RAID-6 array
6-128
Min-Max member drives per RAID-1 array
2-16
Rebuild areas per non-FCM array
1-4
Rebuild areas per FCM array
1
Rebuild areas per non-FCM RAID-1 array
2 drives only
0
>2 drives
1
Rebuild areas per FCM RAID-1 array
2 drives only
0
>2 drives
1
Min-Max stripe width for RAID-5 array
3-16
Min-Max stripe width for RAID-6 array
5-16
Min-Max stripe width for RAID-1 array
2-2
Max drive capacity for RAID-5 array
8 TB
Max drive capacity for RAID-1 array
8 TB
Drives added to an array in a single DRAID expansion
12
Concurrent DRAID expansions per system
4
Concurrent DRAID expansions per parent storage pool
1
External Storage System Properties
Storage system WWNNs per system (cluster)
1024
Storage system WWPNs per system (cluster)
1024
WWNNs per storage system
16
WWPNs per WWNN
16
LUNs (managed disks) per storage system
-
No limit is imposed beyond the managed disks per system limit
System and User Management Properties 
User accounts per system
400
Includes the default user accounts
User groups per system
256
Includes the default user groups
Authentication servers per system
1
NTP servers per system
1
iSNS servers per system
1
Concurrent open SSH sessions per system
32
Event Notification Properties
SNMP servers per system
6
Syslog servers per system
6
Email (SMTP) servers per system
6
Email servers are used in turn until the email is successfully sent
Email users (recipients) per system
12
LDAP servers per system
6
REST API Properties
Maximum active connections per cluster 4 RESTful API
Maximum requests/sec to auth endpoint 3 RESTful API
Maximum requests/sec to command endpoints 10 RESTful API
Number of simultaneous CLIs in progress 1 System
 
 

Extents

The following table compares the maximum volume, MDisk and system capacity for each extent size.

Extent size (MB) 
Maximum non thin-provisioned volume capacity in GB
Maximum thin-provisioned volume capacity in GB (for regular pools) 
Maximum thin-provisioned and compressed volume size in data reduction pools in GB
Maximum total thin-provisioned and compressed capacity for all volumes in a single data reduction pool per IOgroup in GB
Maximum MDisk capacity in GB 
Maximum DRAID Mdisk capacity in TB 
Total storage capacity manageable per system* 
16
2048 (2 TB)
2000
2048 (2 TB)
2048 (2 TB)
2048 (2 TB)
32
64 TB
32
4096 (4 TB)
4000
4096 (4 TB)
4096 (4 TB)
4096 (4 TB)
64
128 TB
64
8192 (8 TB)
8000
8192 (8 TB)
8192 (8 TB)
8192 (8 TB)
128
256 TB
128
16,384 (16 TB)
16,000
16,384 (16 TB)
16,384 (16 TB)
16,384 (16 TB)
256
512 TB
256
32,768 (32 TB)
32,000
32,768 (32 TB)
32,768 (32 TB)
32,768 (32 TB)
512
1 PB
512
65,536 (64 TB)
65,000
65,536 (64 TB)
65,536 (64 TB)
65,536 (64 TB)
1024 (1 PB)
2 PB
1024
131,072 (128 TB)
130,000
131,072 (128 TB)
131,072 (128 TB)
131,072 (128 TB)
2048 (2 PB)
4 PB
2048
262,144 (256 TB)
260,000
262,144 (256 TB)
262,144 (256 TB)
262,144 (256 TB)
4096 (4 PB)
8 PB
4096
262,144 (256 TB)
262,144
262,144 (256 TB)
524,288 (512 TB)
524,288 (512 TB)
8192 (8 PB)
16 PB
8192
262,144 (256 TB)
262,144
262,144 (256 TB)
1,048,576 (1024 TB)
1,048,576 (1024 TB)
16384 (16 PB)
32 PB


* The total capacity values assumes that all of the storage pools in the system use the same extent size. 
 

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Document Information

Modified date:
16 June 2023

UID

ibm16362059