I run SSR 2011 in a number of virtual machines that create the image file on a physical server that offloads to tape. We have been having issues where the backups start well and run well for some hours then slow right down. I am using 2gb file sizes and backing up in one instance about 300gb of data. the base was going OK overnight until about 3am when the files that we being created every 4 mins started to be created avery 15, then 30 sometimes 40 minutes. Still running now.
The destination address is easily accessible, the are no queued packets and the network performace in task manager is very low on both machines.
The whole network was going slow when this was still running (very slowly) during the day and when I cancelled it the whole network returned to normal.
I have already reinstalled SSR 2011 with the latest version, but that may not be the issue...