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# Merge storage groups

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

## About this task

This procedure explains how to merge storage groups to create a cascaded storage group.

Unisphere for PowerMax supports the merging of the masking views of a source stand-alone storage group and a target storage group which has a common initiator group and port group. The target storage group may be a parent storage group or a stand-alone storage group. If the target is a parent storage group, during the merge operation, the source stand-alone SG is added to the target parent storage group and uses the parent storage group masking view. If the target storage group is a stand-alone storage group, all devices in the source stand-alone storage group are moved to the target storage group. The source stand-alone storage group and its masking view are deleted.

To split a storage group:

## Steps

1. Select the storage system.
2. Select Storage > Storage Groups.
3. Select the storage group, click , and click SG Maintenance > Merge Into.
4. Select the target storage group.
5. Do one of the following:
   - Click Run Now to perform the operation now.
   - Expand Run Now and click Add to Job List to add this task to the job list, from which you can schedule or run the task at your convenience. For more information, see Schedule jobs and Preview jobs.