1- Setup full backs to happen Saturday nights.
2- Setup differential backups to happen every night, execpt Saturdays
3- This is on a VM machine, and we take a snapshot of it every Wednesday night.
4- SQL Server records the snapshot as a valid, full backup, although it is marked as is_snapshot = 1.
5- All differential backups after the snapshot are rendered useless. They are done based on the snapshot backup, not on the actual valid full backup done on Saturday.
After research I found KB article 951288 (http://support.microsoft.com/kb/951288). Apparently this is a Microsoft issue.
So, how do we tell SQL server to ignore the snapshot backup when doing the differential backups? And no, we do not want to stop doing our snapshots on Wednesdays. Is there a solution or a work around to this?
This is really annoying and dangerous that SQL Server would consider these snapshots as valid, viable full backups on which to base its differential backups.
Help much appreciated,
Raphael
rferreira