http://exchangeserverpro.com/exchange-2010-passive-database-copies-included-backups-dag-members
So what do we learn from this?
Reminder, the below should be read in conjunction with the notice at the start of the article, as backing up passive database copies using Windows Server Backup is not a supported scenario
- Yes, passive database copies stored on a volume are backed up by Windows Server Backup
- Yes, this allows backups of passive database copies to be restored, although not directly
- Yes, this would allow a backup of a passive database copy to be used for disaster recovery of a database
- No, the backup time stamp is not written when a passive database copy is backed up, so any monitoring of backups that involves checking that time stamp needs to take that into consideration
http://blog.chrislehr.com/2010/03/exchange-2010-dag-backups-using-windows.htm
Johnnyyao WorkSpace Backup Site 