After reading this article is sounds likes like using the datacenter version of windows is the cheapest method using ESX. As I read it you can license one copy of datacenter and run as many VM’s as you want on that machine, including on ESX…..anyone else read this the same way?
Finally Microsoft takes a clear and official position about application of Windows licensing on virtual machines hosted on 3rd party virtualization platforms (including hardware virtualization solutions like VMware ESX Server or VMware Server and OS virtualization solutions like SWsoft Virtuozzo).
In a brand new whitepaper Microsoft covers all these scenarios, including special features like VMware VMotion and client-side licensing terms, detailing:
Microsoft details Windows licensing for 3rd party virtualization platforms
Mon, 11 Jun 2007 12:15:00 GMT