BACKUP 2010 R3: AVVI backups slow
Recently we powered off our vmware environment (vSphere 5.x) as we needed to expand the capacity of our SAN. After we started our vmware environment again, we noticed that all AVVI backups to disk are very slow (job rates around 440 MB per minute which used to be around 1.4 GB). Changing the backup destination to tape does not change anything.
I checked the job history of several backups (before and after the SAN change) but they all used the same transport mode (NBD). When we use RAWS instead of AVVI the job rate is around 1.4 GB per minute.
Except for the SAN changes no other changes (VMware, BE2010 R3, etc.) have been made. Anybody seen this behaviour before and knows how to solve this issue?
Any help will be appreciated.