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# Set volume identifiers

A storage volume is an identifiable unit of data storage. Storage groups are sets of volumes.

## About this task

This operation can be invoked from multiple locations in the Unisphere user interface. Depending on where the operation is invoked, some of the steps below may not apply.

## Steps

1. Select the storage system.
2. Select Storage > Volumes.
3. Select the volume, click , and click Set Volumes > Identifier.
4. Set the volume identifiers:
   - Type the Volume Identifier Name. Volume identifier names must be unique from other volumes on the storage system and cannot exceed 64 characters. Only alphanumeric characters and underscores ( _ ) are allowed.
   - Type the Volume HP Identifier Name. HP identifier names must be a user-defined volume name (not to exceed 64 alphanumeric characters and underscores ( _ ) ) applicable to HP-mapped volumes. This value is mutually exclusive of the VMS ID. This attribute is unavailable for diskless volumes.
   - Type the Volume VMS Identifier Name. VMS identifier names must be a numeric value (not to exceed 32766) with relevance to VMS systems. This value is mutually exclusive of the HP ID. This attribute is unavailable for diskless volumes.
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.