This is an old revision of the document!
Concepts: http://www.altaro.com/hyper-v/live-migration-in-hyper-v-explained-part-1/
In a Cluster: http://www.altaro.com/hyper-v/live-migration-in-hyper-v-explained-part-2/
Non-Clustered: http://www.altaro.com/hyper-v/live-migration-in-hyper-v-explained-part-3/