Windows Server 2008 Release Candidate 1 (RC1) with Hyper-V Beta is now available for evaluation. Hyper-V (formerly codenamed “Viridian”) will be released as a feature of Windows Server 2008 and is now available as a beta with Windows Server 2008 RC1 Enterprise. Microsoft also plans to release a standalone virtualization technology, Microsoft Hyper-V Server, which allows customers to virtualize multiple operating systems onto a single physical server