We're having issues while running our backups where a couple VM's will run very slowly. I'm just looking for any suggestions to try as I've tried as much as I know. This is only happening to 2 out of 35 VM's. One is running Windows 2000 (I know, bad!) the other Windows 2003. I'm working on upgrading the 2000 server to 2008 R2 to see if that takes care of the problem. But we are backing up other 2000 and 2003 servers and they are not affected at all.
Earlier I tried to turn the Data Recovery VM and it timed out after sitting at 1% for 20 mins (while also taking down those other 2 VM's).
Checked all drives, processors, and memory... nothing is getting pushed to its limits.
Details:
30 VM's ((15) 2008 R2, (5) 2008, (8) 2003, (2) 2000)
1 DRS Cluster with 2 Physical ESX servers, esx1 and esx2
12 drive fiber chan SAN (4 LUNS w/RAID 5)
1 External backup appliance 4 TB (2GB trunk)