http://blogs.technet.com/b/matthts/archive/2012/09/20/why-upgrade-from-windows-server-2008-r2-to-windows-server-2012.aspx1. Massive scale Up to 64 virtual processors Up to 1 TB of memory per VM Up to 64 TB per virtual disk Up to 64 nodes in a cluster Up to 8,000 VMs in a cluster 2. Networking Network Virtualization in the box Open, Extensible Virtual Switch SR-IOV In theen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)