. Windows Server 2012 R2 Datacenter will continue to be the ideal edition for highly virtualized private & hybrid cloud environments. It provides customers with unlimited virtualization rights & all of the features of the product. The licensing for Datacenter will continue to follow a processor plus CAL model however now each license will cover up to two physical processors on a server. Windows Server 2012 R2 builds on that familiarity of the Windows Server family you gain all the Microsoft experience behind building & operating private & public clouds delivered as an enterprise-class simple & cost-effective server & cloud platform With Windows Server 2012 R2 you can optimize the performance of your most important workloads as well as protect against service outages by using robust recovery options. To reduce complexity & cost you can take advantage of comprehensive automation capabilities as well as the storage & networking virtualization technologies built into Windows Server 2012 R2. Running on industry-standard HP hardware Windows Server 2102 R2 enables you to build run & scale applications that can move between your data center & the cloud. & to support your mobile workforce Windows Server 2012 R2 provides flexible remote access from virtually anywhere & any device while helping to safeguard corporate information behind your firewall..