BenConrad
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Expert

Does it fail when taking the snapshot or removing the snapshot?

Check out  http://support.microsoft.com/kb/836566, this KB deals with setting some Exchange 2003 cluster timeouts, may still apply to 2010.  In SQL clusters I've had to make changes to (cluster wide)  LooksAlivePollInterval and IsAlivePollInterval in some of my environments.  Helps with storage array failovers, removing & consolidating a snapshot can stun the VM for long periods of time.  4.1 and 5.0 are much better but 4.1 will still stun for many seconds.

Ben

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