With Hyper-V, the Microsoft hypervisor-based server virtualization technology, plus flexible licensing policies, it's now easier than ever to take advantage of the cost savings of virtualization through Windows Server 2008 R2. This enables you to make the best use of your server hardware investments by consolidating multiple server roles as separate virtual machines (VMs) running on a single physical machine and also efficiently run multiple different operating systems—Windows, Linux, and others—in parallel, on a single server, and fully leverage the power of x64 computing.
For more details visit
http://www.microsoft.com/windowsserver2008/en/us/hyperv-main.aspxThanks!
