### Could not unblock logical drive [number] on controller [number].

Explanation: The rebuild operation did not complete successfully or a hardware error occurred.

Action:

1. Verify that the rebuild operation completed successfully.
2. Verify that the controller, cables, and hard disk drives are installed properly.
3. Verify that there is power to the drives.
4. Retry the command.
5. If the command still fails, restart the server and retry the command.