Please check the protected server (PS) and make sure the Windows backup feature is installed and if already installed look for any event messages on the PS for Windows backup that may detail the cause of the failure.
To test BMR backup outside of DPM, try this command:
1) Set up a network share on a remote machine
\\server\bmrshare
2) From an administrative command prompt on the PS, type:
wbadmin.exe start backup -allcritical -backuptarget:\\server\bmrshare
This should show you the list of volumes included in the BMR backup and ask "Do you want to start the backup operation?. - Type Y to continue..
3) Troubleshoot any Windows backup problems that occur, once this works, DPM should be able to take BMR backups.
Windows 2008 backup logs are located in the %windir%\logs\WindowsServerBackup folder
If the error isn't self explanatory, please open a thread in the Windows backup group concerning the wbadmin error.
http://social.technet.microsoft.com/Forums/en-US/windowsbackup
4) Check the disk space required for the BMR by looking at the
\\server\bmrshare and make sure the replica volume on the DPM server has enough disk space allocated to hold the BMR backup.
NOTE: BMR backup does NOT require any disk space on the PS, DPM writes directly to the DPM Servers replica volume. However, if you only select SystemState (not bmr option) - then DPM will require ~15GB free space on the PS.
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Regards, Mike J. [MSFT]
This posting is provided "AS IS" with no warranties, and confers no rights.