Virtualization Rights for Windows Server 2008

Virtualization Rights for Windows Server 2008 Standard, Enterprise, Datacenter and Windows Server 2008 for Itanium Based Systems

The number of instances of Windows Server 2008 that may be run simultaneously on a server varies by edition of Windows Server. Please also see the Product Use Rights for details.

  • Windows Server 2008 Standard: Assigning a single license of Windows Server 2008 Standard to a server permits you to run one instance of the software in one physical and one virtual OSE on that server. If you run both the permitted instances at the same time, the instance of the server software running in the physical OSE may only be used to run hardware virtualization software, provide hardware virtualization services or to run software to manage and service the OSEs on the server. To run more than two instances of Windows Server 2008 Standard on a server, you need to assign a Windows Server 2008 Standard license for each additional running instance in a virtual OSE, or, alternatively, assign a higher-level edition that permits more than one running instance in the virtual OSE at a time (for example, Enterprise or Datacenter). You are permitted to assign as many licenses as needed to one server to license the number of running instances you require. You may run instances of prior versions of the server software instead of Windows Server 2008 Standard in any of the OSEs on the licensed server.

    You need a license for each instance running at the same time whether in a physical or virtual OSE.
     
  • Windows Server 2008 Enterprise: A Windows Server 2008 Enterprise license grants the right to run Windows Server 2008 Enterprise on one server in one physical OSE and up to four simultaneous virtual OSEs. If you run all five permitted instances at the same time, the instance of the server software running in the physical OSE may only be used to run hardware virtualization software, provide hardware virtualization services or to run software to manage and service the OSEs on the server. You may run instances of the Standard or prior versions in place of Windows Server 2008 Enterprise in any of the OSEs on the licensed server.
     
  • Windows Server 2008 Datacenter: When Windows Server 2008 Datacenter is licensed for every physical processor in a server, the server may run the server software in the physical OSE and an unlimited number of virtual OSEs on the licensed server. You may run instances of Windows Server 2008 Standard or Windows Server 2008 Enterprise in place of any Windows Server 2008 Datacenter in any of the OSEs on the licensed server. Unlike with Standard and Enterprise, with Windows Server 2008 Datacenter, the instance of the server software running in the physical OSE may be used to run any software or application you have licensed. Because Windows Server 2008 Datacenter permits an unlimited number of simultaneous running instances on a licensed server, you have the flexibility to run instances of Windows Server in virtual OSEs without having to track the number of instances running or worry about being under-licensed.
     
  • Windows Server 2008 for Itanium Based Systems: The virtualization rights for Windows Server 2008 for Itanium Based Systems are the same as those of Windows Server 2008 Datacenter. You may run any edition or prior version of Windows Server software for Itanium platforms instead of Windows Server 2008 for Itanium Based Systems in any of the OSEs on the licensed server.

For Windows Server 2008 Datacenter Edition and Windows Server 2008 Datacenter without Hyper-V and Windows Server 2008 For Itanium-Based Systems:
Running Instances of the Server Software.

  • For each server to which you have assigned the required number of software licenses, you may run on the licensed server, at any one time:
    • One instance of the server software in the physical OSE, and
    • Any number of instances of the server software in virtual OSEs (only one instance per virtual OSE).
  • However, the total number of physical processors used by those OSEs cannot exceed the number of software licenses assigned to that server.
  • The software or your hardware may limit the number of instances of the server software that can run in physical or virtual operating system environments on the server.

For Windows Server 2008 Standard and Windows Server 2008 Standard without Hyper-V:

Running Instances of the Server Software. For each license you assign:

  • You may run on the licensed server, at any one time:
    • one instance of the server software in one physical operating system environment, and
    • one instance of the server software in one virtual operating system environment.
  • If you run an instance in the virtual operating system environment, the instance of the server software running in the physical operating system environment may be used only to:
    • run hardware virtualization software
    • provide hardware virtualization services
    • run software to manage and service operating system environments on the licensed server.

For Windows Server 2008 Enterprise and Windows Server 2008 Enterprise without Hyper-V:

Running Instances of the Server Software. For each license you assign:

  • You may run on the licensed server, at any one time:
    • one instance of the server software in one physical operating system environment, and
    • up to four instances of the server software in virtual operating system environments (only one instance per virtual operating system environment).
  • You may run on the licensed server an instance of Standard in place of Enterprise in any of the operating system environments.
  • If you run all five permitted instances at the same time, the instance of the server software running in the physical operating system environment may be used only to
    • run hardware virtualization software
    • provide hardware virtualization services
    • run software to manage and service operating system environments on the licensed server.
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