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# View storage groups

Storage groups are a collection of devices that are stored on the array, and an application, a server, or a collection of servers use them.

## About this task

There are multiple ways to view the same information. Depending on the method you use, some of the properties and controls may not apply.

For information about viewing cascaded storage groups, see View cascaded storage groups.

## Steps

1. Select the storage system.
2. Select Storage > Storage Groups (or by selecting VIEW ALL CKD STORAGE GROUPS from the Hosts > Mainframe dashboard) to open the Storage Groups list view.

   The following properties display:

   - Name—Name of the storage group
   - Compliance—How well the storage group is complying with its service level, if applicable. Possible values are:
     - Critical—Storage group is performing well below service level targets.
     - Marginal—Storage group is performing below service level target.
     - Stable—Storage group is performing within the service level target.
     - Storage group has no assigned service level.
     - Compliance information is being collected.
   - SRP—Name of SRP that the storage group belongs to, if any.
   - Service Level—Name of the service level that is associated with the storage group
   - Capacity (GB)—Total capacity of the storage group in GB
   - Emulation—Emulation associated with the storage group
   - Data Reduction Ratio—Data Reduction Ratio for the storage group
   - Masking Views—Number of masking views associated with the storage group
   - Unreducible (GB)—Amount that a storage group is unreducible (only available on storage systems running PowerMaxOS 5978 Q1 2021 SR or later).
   - Tags—List of tags associated with the storage group (applies to storage groups for PowerMaxOS 5978 storage systems running release 9.1 or later).
   - # File System —Number of file systems associated with the file storage group (this column only displays in eNAS environments).
   - # Storage Pools—Number of storage pools associated with the file storage group (this column only displays in eNAS environments).

   The following controls are available:

   - — View storage group details
   - Create — The Provision Storage wizard
   - Modify— Modify storage groups
   - Provision— The Provision Storage wizard
   - Protect — Protect Storage Groups wizard
   - Set Host I/O Limits— Set host I/O limits
   - —Unisphere enables you to tag arrays and storage groups for PowerMaxOS 5978 storage systems running release 9.1 or later. You can add a tag to an object to identify it or to give other information. An association between objects can be inferred by adding the same tag to each object. You can search by tag to retrieve related objects. Tags can be added to and removed from objects. When a tag is no longer associated with an object, it no longer exists. Objects that are supported are arrays and Storage Groups. The following tagging rules apply:
     - The tag has a 64 Character limit of letters, numbers, - and _ .
     - There are a maximum of 500 unique tag names per array.
     - There are a maximum of eight tags per object.
     - Tags can be mixed case and are case-sensitive.
     - There are 500 unique tag names per array.
     You can click to view the list of tags. You can also add one or more new tags.
   - Modify Service Levels— Modify Service Levels
   - Set Volumes > Set Volume Status— Set volume status
   - Set Volumes > Replication QoS— QOS for replication
   - Migrate— Create a migration session
   - Allocate/Free/Reclaim > Start— Manage thin pool allocations
   - Allocate/Free/Reclaim > Stop— Manage thin pool allocations
   - SG Maintenance > Convert to Cascaded— Convert storage groups to cascaded
   - SG Maintenance > Split From— Split storage groups
   - SG Maintenance > Merge Into— Merge storage groups
   - SG Maintenance > Remove— Add or remove cascaded storage groups
   - Change SRP— Change Storage Resource Pools for storage groups
   - Delete— Delete storage groups
   - Expand PowerProtect Storage Direct— Expand PowerProtect Storage Direct storage groups