Two useful Hyper-V links
A short post by my standards
On the server core blog, Chuck has posted Top Issues for Microsoft Support for Windows Server 2008 Hyper-V , which makes an interesting read. If you do a lot of hyper-v you’ll probably stumble over one of these at some point.
On the Main Microsoft site we have Windows Server 2008 R2 & Microsoft Hyper-V Server 2008 R2 - Hyper-V Live Migration Overview & Architecture which is exactly what it says.