russwatkins wrote:Last night, this issue arose again on one of our other servers - I came in to a none responsive VM. When I looked at the backups, the server backed up at 500k per second (this VM usually backups up at 10 times this speed as it is network connected, not on our FC backbone). Consequently the snapshot was trying to remove and taking a long time. In the end the backup competed in 6 hours which would usually take around 30 minutes.
The backup was a full that was running - server is Windows 2003 Enterprise. Could this be a factor? The backups have run for several months with no issues.
Well...how much time does your usual full backup of this VM take? "500k per second" is an unacceptably low performance rate, I wonder what does your job log say about that. Also If your backups were running fine for months, then I doubt that your current approach has some pitfalls... we just need to verify why your job was so slow.
Btw, what was the size of the VM snapshot when it started its consolidation? Do you have any monitoring tool to look after VM snapshot size and age?