See also more Hyper-V pages
Great Intro: http://www.altaro.com/hyper-v/high-availability-shared-storage-in-hyper-v/
http://technet.microsoft.com/en-us/library/dd446679%28WS.10%29.aspx
http://technet.microsoft.com/en-us/library/cc732181%28v=ws.10%29.aspx