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# Activate external disks

External storage can be attached to a storage system.

## About this task

You can activate an external disk that is in one of the following states: drained, draining, or disabled.

## Steps

To activate an external disk:

1. Select the storage system.
2. Select STORAGE > Storage Resource Pools.
3. Select the SRP and click to view its details.
4. Click the number next to Disk Groups.
5. Select an external disk group and click to view its details.
6. Select the external disk that you want to activate, click , and click Activate.
7. 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.