Verify issue: Verify duration every second week 4 hours longer than the other week
Hi.
Since several weeks we have a strange issue with the verify of the full backup of our fileserver.
The full backup runs every thursday and the option "Verify after backup completes" is enabled and so the verify runs directly after the completed backup.
Usually the whole full backup job of our fileserver runs for 5 hours, this includes ~ 45 minutes of verify. Our problem is that every second week the whole job needs 9 hours but the backup job doesn't need more time instead it's the verify job which runs for about 4 hours. It is really strange that the job needs the one week the normal time and the other week it's faulty and the verify needs 4 hours longer.
For example:
Thursday, September 1th -> verify 45 minutes,
Thursday, August 25th -> verify 4 hours 45minutes,
Thursday, August 18th -> verify 1 hour,
Thursday, August 11th -> verify 5 hours.....
I examined the last three months and I can not believe that this is just a coincidence?!
Any ideas what could cause this issue? Is there any option or operation/functionalty that would explain this behaviour?
Thanks in advance.
Backup Exec 2010 R2 - Rev. 4164