VMM 2008 R2 Beta is a comprehensive management solution for virtualized infrastructure that takes advantage of many of the great new features of Windows Server 2008 R2 Beta including: Live Migration: Enables the movement of running virtual machines from one virtual host to another with no downtime. Clustered Shared Volumes: Helps enable Live Migration and eliminates the previous one LUN per virtual machine requirement thus simplifying SAN administration. Hot addition/removal of storage: Allows the...(read more)

Read the complete post at http://scug.be/blogs/scvmm/archive/2009/03/13/what-is-vmm-2008-r2-beta-and-what-are-its-new-capabilities.aspx