Recently I have been handed the backup responsibilities for our servers. To do this I have been implementing DPM 2010. I ran into a small problem today and wanted to write it up so that I don't forget it, and to share what I found.
I added a servers system state to a recovery group. When ever it tries to create the initial replica it would fail. DPM said:
Description: DPM cannot create a backup because Windows Server Backup (WSB) on the protected computer encountered an error (WSB Event ID: 546, WSB Error Code: 0x8079005F). (ID 30229 Details: Internal error code: 0x809909FB)
The only thing I could find on the protectyed server was the Event ID 546 which said:
The backup operation attempted at '2011-08-05T16:56:14.705364900Z' has failed to start, error code '2155413599'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.
I found the answer it this thread: http://www.eggheadcafe.com/software/aspnet/35551740/problem-backing-up-2008r2-system-state-with-dpm-2010.aspx
Check the backup target being used by DPM, by looking at C:\Program Files\Microsoft Data Protection Manager\DPM\Datasources\PSDataSourceConfig.xml on the protected server. Check for <FilesToProtect> element. I found that this was pointed to D:\WindowsImageBackup. The problem was that this server didn't have a D:\. Now, I don't know why DPM initially set this path, but I do know that if you change that to C:\WindowsImageBackup the problem is fixed.