NetBackup status code: 52

Message: timed out waiting for media manager to mount volume

Explanation: The requested volume was not mounted before the timeout expired. This error can also occur if the volume is a cleaning tape but was not specified as a cleaning tape.

Another possible cause: the last available drive has a mount request for a non-backup (such as a restore). Then a backup that requires the same drive is initiated before the mount completes. This error is due to the drive not being reported as busy until the mount completes.

Recommended Action: Do the following, as appropriate: