Microsoft Virtual Server 2005 R2 is the current server virtualization solution from Microsoft and is based on a hosted virtualization platform. Hyper-V, a KEY feature of Windows Server 2008 R2, is a hypervisor-based virtualization platform that will enable customers to not only consolidate a vast ARRAY of workloads but also enable moving toward a dynamic IT environment. Core feature set DIFFERENCES include support for 64 guest virtual machines, SMP support, performance improvements, and other key features in Hyper-V.

Microsoft Virtual Server 2005 R2 is the current server virtualization solution from Microsoft and is based on a hosted virtualization platform. Hyper-V, a key feature of Windows Server 2008 R2, is a hypervisor-based virtualization platform that will enable customers to not only consolidate a vast array of workloads but also enable moving toward a dynamic IT environment. Core feature set differences include support for 64 guest virtual machines, SMP support, performance improvements, and other key features in Hyper-V.