i have set up backup schedule on our server. SQL Server 2008 to 01:00am on windows server 2008 R2 to 4:00am. Sql backup runs well, but system backup ends sometimes with error.

windows backup error

The error is : http://technet.microsoft.com/en-us/library/dd364768%28WS.10%29.aspx

I mean, that is caused by SQL Server, because it unexpectedly runs backup.

this is from sql server log (it runs for every database):

Date 4.2.2010 4:00:21 Log SQL Server (Current - 29.1.2010 23:25:00)

Source spid72

Message I/O is frozen on database master. No user action is required. However, if I/O is not resumed promptly, you could cancel the backup.


Date 4.2.2010 4:00:24 Log SQL Server (Current - 29.1.2010 23:25:00)

Source Backup

Message Database backed up. Database: master, creation date(time): 2010/01/29(23:25:32), pages dumped: 370, first LSN: 859:56:37, last LSN: 859:80:1, number of dump devices: 1, device information: (FILE=1, TYPE=VIRTUAL_DEVICE: {'{17B91D5C-9968-4D11-A7F1-1A31523D32F0}25'}). This is an informational message only. No user action is required.

My questions is:

Why runs sql backup with windows backup? How can i dissolve this that errors?

Thank you a lot.


did you exclude SQL servers data file from the backup ? Else Windows backup will try to backup them through VSS

How do you backup SQL server ? SQL dumps ?

  • No, i haven't exclude anything. There is configured maintanence plan on SQL server for backup. – remunda Feb 5 '10 at 7:09
  • As you are doing SQL backup through Maintenance plan, SQL data files must be excluded from the windows backup – Mathieu Chateau Feb 5 '10 at 7:12
  • i have database files on system drive and if i want to exclude folders with sql databases, i cannot use bare metal recovery. doesn't exist another solution? thanks – remunda Feb 5 '10 at 12:15
  • poor way: disable the SQL VSS writer through vssadmin, files will be locked and so skipped. I will do some tests to see how to do that the right way – Mathieu Chateau Feb 5 '10 at 17:33
  • i turned off sql vss writer and it didnt help. Backup operation succeded, but it logs still the same error: The backup operation that started at '‎2010‎-‎02‎-‎10T03:00:14.895304600Z' has failed because another backup or recovery operation is in progress. – remunda Feb 10 '10 at 6:52

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