server 2008R2 VSS SLOWWWWWW (no errors)
Backup Server: 2008R2 Backup Exec 2010 R3, houses Hyper-V Servers as well
Problem Server: 2008R2
Backup of server takes 11 hours (Normally should take 2-3 hours), Throughput on backup reports normal 1800-2000MB/s, but there are gaps of time inbetween C, D, Shadow Volume, System State. Snapshot processing appears to stall for 2 hours inbetween each give or take.
If I edit the backup job and try to look at system state and Shadow Volume, it will open them, after 10-20 minutes. (opening C or D and utility partition is normal)
VSSadmin List writers takes 10-20 minutes to report, no errors reported.
There are no Event Log errors.
I have tried the Reregistering of VSS DLLs, which worked until the next reboot. The results of the DLL reregister seemed to just kill vss , which resolved the long backup time problem, but left vss dead Till it came back alive on a reboot.
I have done searching for this problem, of the searches there are many, but most if not all are reporting errors of some kind, but nothing on just plain slow vss. and any resolutions to the slowness appear to be related to the VSS DLL reregister which has mixed results and mixed answers as to IF it should be done on a 2008R2 server.