# Synchronization failed on logical drive [number] of controller [number].

## Explanation:

A hardware error occurred.

## Action:

Verify that the specified logical drive is not offline or critical (that is, one physical drive that is offline in a RAID level-1, 1E, 5, 5E, 10, 1E0, or 50 logical drive). If the logical drive is critical, replace the failed physical drive. If the logical drive is offline, replace the failed physical drives and restore the data from tape backup.

If the specified logical drive is not offline or critical, complete the following steps:

1. Verify that the controller, cables, and physical drives are installed properly.
2. Verify that there is power to the physical drives.
3. Retry the command.
4. If the command still fails, restart the server and retry the command.

If the problem persists, contact your IBM service representative.

Glossary | Contents

x-0021-SRM-00-03-EN