SSR 2013 backup failing, need debug logging
Our backups will fail every month or so. The error message is below:
Error EC8F17B7: Cannot create recovery points for job: Drive Backup of System Reserved (*:\), (C:\), d-drive (D:\), e-drive(E:\).
Error E0BB00B5: Snapshot error
Error EBAB03F1: Following Operating System error occurred while performing requested operation: 'OS error 2147754760.'. (UMI:V-281-3215-6071)
I have googled and searched the Symantec forums regarding these error messages and nothing works. Our VSS writers are all stable and in good condition, the shadow copies are only on C: and they have been creating fine (7 am and 12 pm every weekday, 50 GB of storage, oldest copy is successfully deleted).
Windows Small Business Server 2011 (which is Windows Server 2008 R2).
SSR 2013 Small Business Server Edition 11.0.2.49853
Our backups are on weekdays, start at 9 PM and finish around 6:50 AM. We are backing up to external USB drives, a different one for each weekday.
Nothing seems to be causing these failures; it happens with different USB drives, and with no clearly connected entries in the Event Viewer that have happened each time.
I can't tell at what point in the backup process the backup is failing, that is, what file the backup fails on. How do I turn on enhanced logging for SSR 2013 so I can see what files are successfully copied during the backup process and at what time? I have only so far found instructions for Backup Exec, not SSR 2013.
FYI
Debugging is always on for SSR, there is nothing that needs to be enabled. That said, the debug logs (.dbg files) are encrypted and can only be viewed by Symantec staff - hence the need for a support case.