Zimbra-mbox3 backup failure

The full backup of Zimbra-mbox3 that runs every weekend failed to complete successfully due to the backup volume going offline.  The volume has been reattached and checked for errors.  A new full backup of Zimbra-mbox3 has been started but this will take some time to complete.  Mailboxes will become locked temporarily as they're backed up.  This should go unnoticed but there's a chance that an access attempt is made at the same time a mailbox is locked.

Unfortunately we're unable to perform any mailbox restores on zimbra-mbox3 until the backup completes.  We're also unable to restore mailboxes on zimbra-mbox3 since the last valid incremental which was on Friday 14th at 1AM.

The other Zimbra mailbox servers are unaffected.

Apologies for the trouble this may cause.