The Windows backup to CIFS share succeeded without incident. I'm about to leave for the weekend but will post back on Monday when I can configure a backup job just for the one DC to local physical storage and test that operation.
Also... per anothe...
The Windows backup is currently running to the same SAN target (CIFS Share) that Backup Exec rights to (just a different folder and probably different data store).
I can't attach the logs because they're on a closed network that I can't bring the l...