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# View Storage Resource Pools

A Storage Resource Pool is a collection of data pools that are used for capacity and performance management.

## About this task

Depending on whether the SRP is a single emulation SRP (FBA or CKD) or a mixed SRP (FBA and CKD), some of the properties that are listed below may appear in a different order or not at all.

## Steps

1. Select the storage system.
2. Select Storage > Storage Resource Pools to open the Storage Resource Pools view.

   The following properties display:

   - Name—Name of the storage resource pool.
   - Emulation—Emulation type (FBA, CKD - not applicable for storage systems that are running HYPERMAX OS 5977, Mixed emulation is also a supported type).
   - Overall Efficiency—Overall efficiency
   - Physical Used (%)—Physical used capacity, expressed as a percentage
   - Physical Capacity (TB)—Physical capacity
   - Effective Used Capacity (%)—Effective used capacity, expressed as a percentage
   - Provisioned Capacity (TB)—Provisioned capacity
   - Unreducible (GB)—Amount of unreducible data at an SRP level (only available on storage systems running PowerMaxOS 5978 Q1 2021 SR or later)

   The following controls are available:

   - Modify— Modify Storage Resource Pool details
   - Add EDisks— Add external disks

   Click to view the following:

   Details tab

   - Name of the storage resource pool
   - Description—Description
   - Overall Efficiency—The current data reduction efficiency on this storage resource pool
   - Data Reduction—Indicates whether data reduction is enabled or disabled for this storage resource pool.
   - Data Reduction Ratio—Data Reduction ratio
   - Unreducible (TB)—Amount of unreducible data at an SRP level (only available on storage systems running PowerMaxOS 5978 Q1 2021 SR)
   - DRR on Reducible Only —DRR on reducible only (only available on storage systems running PowerMaxOS 5978 Q1 2021 SR)
   - Compression State—The compression state
   - Default Emulation—The default emulation for the pool (FBA or CKD)
   - Effective Used Capacity (%)—The effective used capacity, expressed as a percentage
   - Effective Used Capacity (TB)—The effective used capacity
   - Physical Capacity (TB)—Physical capacity
   - Physical Free Capacity (TB)—Physical free capacity
   - Provisioned Capacity (TB)—Provisioned capacity
   - Snapshot Modified Capacity (TB)—Snapshot modified capacity
   - Snapshot Total Capacity (TB)—Snapshot total capacity
   - Reserved Capacity % (0-80)—Reserved capacity
   - Usable by RDFA DSE—Specifies whether the Storage Resource Pool can be used for SRDF/A DSE operations. This field does not display for external SRPs.
   - Disk Groups—Number of Disk Groups
   - Reliability State—This property reflects the overall RAID group and device group health. The possible values for the reliability state are:
     - Optimal—All RAID groups in the device group are healthy, and there is sufficient available spare capacity to cover any spindle in the device group.
     - NoSpare—All RAID groups in the device group are healthy, and there is insufficient available spare capacity in the device group (one or more spindles cannot be covered).
     - Rebuilding—One or more RAID groups in the device group are in a Degraded state, and rebuilding of the degraded RAID groups is taking place (assumes sufficient spare capacity to accommodate rebuilding).
     - NoRebuild—One or more RAID groups in the device group are in a Degraded state, and one or more RAID groups in the device group is prevented from rebuilding (due to insufficient spare capacity).
     - Failed—One or more RAID groups in the device group are in a Failed state.
   - Target Effective Capacity (TB)—Target effective capacity
   - Add Capacity State—Add capacity state
   - Add Capacity Est. Time to Completion—Add capacity estimated time to completion
   - Add Capacity Est. Time to Completion—Add capacity estimated time to completion

   FBA tab

   - Name of the storage resource pool
   - Description—Description
   - FBA Service Levels—Number of FBA service levels
   - Overall Efficiency—The current data reduction efficiency on this storage resource pool
   - Compression State—The compression state
   - FBA Effective Used Capacity (%)—The effective used capacity, expressed as a percentage
   - FBA Effective Used Capacity (TB)—The effective used capacity
   - FBA Physical Capacity (TB)—Physical capacity
   - FBA Physical Free Capacity (TB)—Physical free capacity
   - FBA Provisioned Capacity (TB)—Provisioned capacity
   - FBA Snapshot Modified Capacity (TB)—Snapshot modified capacity
   - FBA Snapshot Total Capacity (TB)—Snapshot total capacity
   - FBA Over Provisioning Threshold (%)—Enter a value between 50 and 2000. This parameter is only applicable for a mixed SRP associated with a storage system running PowerMaxOS 10 (6079).
   - FBA Target Effective Capacity (TB)—Target effective capacity
   - FBA Target Physical Capacity (TB)—Target physical capacity
   - Add Capacity State—Add capacity state
   - Add Capacity Est. Time to Completion—Add capacity estimated time to completion

   CKD tab

   - Name of the storage resource pool
   - Description—Description
   - CKD Service Levels—Number of FBA service levels
   - Overall Efficiency—The current data reduction efficiency on this storage resource pool
   - Compression State—The compression state
   - CKD Effective Used Capacity (%)—The effective used capacity, expressed as a percentage
   - CKD Effective Used Capacity (TB)—The effective used capacity
   - CKD Physical Capacity (TB)—Physical capacity
   - CKD Physical Free Capacity (TB)—Physical free capacity
   - CKD Provisioned Capacity (TB)—Provisioned capacity
   - CKD Snapshot Modified Capacity (TB)—Snapshot modified capacity
   - CKD Snapshot Total Capacity (TB)—Snapshot total capacity
   - CKD Over Provisioning Threshold (%)—Enter a value between 50 and 2000. This parameter is only applicable for a mixed SRP associated with a storage system running PowerMaxOS 10 (6079).
   - CKD Target Effective Capacity (TB)—Target effective capacity
   - CKD Target Physical Capacity (TB)—Target physical capacity
   - Add Capacity State—Add capacity state
   - Add Capacity Est. Time to Completion—Add capacity estimated time to completion

   The panels also provide links to views displaying objects contained in the pool. There is a number after each link, indicating the number of objects in the corresponding view. For example, clicking the number next to Disk Groups opens a view listing the disk groups in the storage resource pool.

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