We've had a problem with VM's becoming unresponsive, and it was narrowed down to the second that Veeam releases a snapshot. We're using CBT for VM's, hoping that it'd help with backup times. Additionally, we're currently running Veeam B&R 18.104.22.168, Vmware 4.1 esxi on our hosts and vSphere 4.1.
The issue came up with our windows admins who kept seeing clustered VM's bark in SCCM about loosing a node in a cluster. I've noticed it on several linux-based systems and witnessed the unresponsiveness (up to 10 mintues!!!) myself and thought I was crazy. I've suggested bumping out the timeout values for those cluster checks on the windows systems, but it seems odd that this is a persistent issue that's becoming more and more trouble.
Now, I've seen the issue with NFS and CBT in VMware 4.1, here: http://kb.vmware.com/selfservice/micros ... 0168771546
But all of our datastores are on a 8Gb SAN. This may be an exclusive VMware issue, but I need help pointing the finger. Veeam - is there anything you have heard of regarding long snapshot release times? I'm only guessing this is due to CBT because that's the only thing I can think of at this stage that would be causing the issue. When I make a regular snapshot, there's no issues.