This question comes to mind because we are tinkering with the idea of going VM with some of our servers. KVM is a bit involved, VMWare acts like they want to be a free product, and Microsoft is just out of the question when it comes to virtualization. However, the machine is going to remote location with electrical issues long enough to surpass the capability of our UPS units.
In short, I want to be able to make phone call and tell somebody to push the power button back on and have services running again on the guest machine without have to talk somebody through logging on (which ivolves giving user name and pw to the machine) and starting the virtual machine. Is this possible?