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# Set a device identity

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

## Prerequisites

## About this task

This operation allows the conversion of device IDs between Compatibility IDs and Mobility IDs.

## Steps

1. Select the storage system.
2. Select Storage > Volumes.
3. Select an FBA volume, click , and click Set Volumes > Mobility ID.
4. To change the device identity type from Compatibility ID (default) to Mobility ID, select Mobility ID.
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.

## Results

If the operation is successful, a success message appears to indicate that the Ready Target operation was successful and that a host discovery must be performed. The state at this stage is Migrating. After the host discovery has been performed and all data is synchronized between the source and target storage systems, the migration state changes to Synchronized.

If the command was unsuccessful, an error message is displayed and details the reason for the command failure. If the Ready Target operation has run to completion with a failed status, the migration has a status of Ready Target Failed.

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