http://blogs.technet.com/jhoward/archive/2009/03/24/understanding-microsoft-virtualization-solutions.aspxOK, so I'm a couple of months behind the times.... but in case you aren't already aware, there's a free 400+ page Microsoft Press E-Book available online. It makes interesting reading and has an all-up view of Microsoft virtualization covering Hyper-V,en-GBCommunityServer 2.1 SP1 (Build: 61025.2)