Duncan Epping, working as a Principal Architect at the VMware Tech Marketing team and Frank Denneman who is Consulting Architect at VMware have published a book titled: VMware vSphere 5 Clustering Technical Deepdive.
The book explains the concepts and mechanisms and covers the necessary steps to create a vSphere High Availability (HA) and Distributed Resource Scheduling (DRS) cluster and create vSphere Storage DRS, a new feature in vSphere 5.
The book also covers HA admission control policies, DRS resource pools, Datastore Clusters and resource allocation settings and provides basic design principles that can be used for designing, implementing or improving VMware infrastructures and fundamental supporting features like (Storage) vMotion, Storage I/O Control and much more.