Thanks for the suggestion. I've scoured the logs (vCenter, vmware.log, hostd.log, messages, vpxd.log, vmkernel) but there's no indication of anything right before it decides to restart. Our network was not overloaded at the time.
Is there a local VMware Tools log in the OS? I definitely need to find out why this occurred, but I don't know what else I can look at?
Thanks,
Scott