We’re currently running the free VMware server using Windows 2003 Server as the host operating system on our original Dell 2950 server. We have 8-10 virtual servers running on that box now, none of which are demanding resource-wise (gratefully).
Three weeks ago we bought a second 2950 like the one we bought last year, a Dell/EMC AX150i iSCSI SAN, and a bunch of expensive ESX 3 software from VMware. We’re going to hook the two 2950s to the SAN, load ESX on them, and convert all of our existing virtual servers as well as 3 older physical servers to the new virtual environment. We have hired some consultants to help us and hope to have it in production by June 4. We’ll keep you posted …