VMware ESX 4 can even virtualize itself

Running VMware ESX inside a virtual machine is a great way to experiment with different configurations and features without building out a whole lab full of hardware and storage. It is pretty common to do this on VMware Workstation nowadays — the first public documentation of this process that I know of was published by Xtravirt a couple of years ago.

But what if you prefer to run ESX on ESX instead of Workstation?

Full article at:
http://www.vcritical.com/2009/05/vmware-esx-4-can-even-virtualize-itself/