1. Windows Server 2008 R2 Virtualization Instances Allowed ProductInstances in Physical /Virtual OS Windows Server 2008 R2 Standard1 + 1 Windows Server 2008 R2 Enterprise1 + 4 Windows Server 2008 R2 Datacenter1 + unlimited Windows Web Server 2008 R21 or 1

2. Virtualization for Windows Server 2008 R2 Standard PLs Required: 2 Virtual Instance Windows Server 2008 R2 Standard ProcProc Virtualization Software

3. Virtualization for Windows Server 2008 R2 Standard PLs Required: 4 Virtual Instance Windows Server 2008 R2 Standard ProcProc Virtualization Software

4. Virtualization for Windows Server 2008 R2 Enterprise PLs Required: 2 Virtual Instance Windows Server 2008 R2 Enterprise ProcProc Virtualization Software

5. Virtualization for Windows Server 2008 R2 Enterprise PLs Required: 4 Virtual Instance Windows Server 2008 R2 Enterprise ProcProc Virtualization Software

6. Virtualization for Windows Server 2008 Web PLs Required: 4 Virtual Instance Windows Server 2008 R2 Web ProcProc Virtualization Software

7. Virtual Instance Windows Server 2008 R2 Datacenter ProcProc Virtualization Software Virtualization Windows Server 2008 R2 Datacenter PLs Required: 2

8. Virtualization Whitepaper on microsoft.com Product Scenarios and Licensing Considerations Windows Server: Standard, Enterprise, Datacenter SQL Server: Workgroup, Standard, Enterprise System Center Use of Central Storage Use of Non-Microsoft Virtualization Technologies Hosting Scenarios Unmanaged Dedicated Server as host with one or more guests VDS Unmanaged and Managed Authenticated Virtual Dedicated Servers Shared Hosting Configurations Running Desktop Systems as Hyper V Guests Using End Customer owned licenses on the Guest System Center product to manage the hosting environment