We have a VMWARE 4.x server on top of an ESX4.1update 1 and the domain controller (win2008R2) keeps powering off. The setting to turn the power back on in 2008 is ticked but the server does not auto power on. Any suggestions for the vmware config or 2008 tricks?
Your licence is still valid? a VM don't power off alone..
After that, we need more detail on your infrastructure, do you have juste 1 ESX ? Do you have a Vcenter ?
The way to auto power on a VM after a crash is call HA. Its only available on a cluster ESX with Vcenter.
You have an option in configuration/Startup option to specify the auto power on, but its just when your ESX boots up.