Microsoft details Windows licensing for 3rd party virtualization platforms

Posted by virtualization.info Staff   |   Monday, June 11th, 2007   |  

Finally Microsoft takes a clear and official position about application of Windows licensing on virtual machines hosted on 3rd party virtualization platforms (including hardware virtualization solutions like VMware ESX Server or VMware Server and OS virtualization solutions like SWsoft Virtuozzo).

In a brand new whitepaper Microsoft covers all these scenarios, including special features like VMware VMotion and client-side licensing terms, detailing:

If you have assigned a single license of Windows Server Standard Edition to the server running ESX, then you may run one instance at a time of Windows Server Standard Edition. If you have assigned a single license of Windows Server Enterprise Edition to the server running ESX, then you may run up to four instances at a time of Windows Server. You may not run a fifth instance under the same Enterprise Edition license because that right requires that the fifth instance be running hardware virtualization software and software managing and servicing the OSEs on the server. However, Datacenter Edition permits unlimited running of instances in virtual OSEs.

VMotion, System Center Virtual Machine Manager, and Windows Server Clustering all move instances of virtual OSEs between physical servers. However, the licenses remain with the physical server to which they are assigned. When an instance is moved to a new physical server, the new server must have the appropriate licenses.

With a few exceptions, described in the box to the side regarding PUR, software licenses may only be reassigned to new hardware after 90 days. However, the dynamic movement of virtual OSEs between licensed servers is not restricted in any way. As long as the servers are licensed-and are not running more instances simultaneously-you are free to use VMotion and System Center Virtual Machine Manager to move virtualized instances between licensed servers at will…

The most interesting part anyway is a final comparison chart between VMware ESX Server, SWsoft Virtuozzo and Microsoft Virtual Server, where appears VMware ESX Server is less expensive than competitors when using Windows Server 2003 Standard Edition, and has equal costs when you adopt Enterprise or Datacenter editions (which are preferred choice for virtualization deployments):

Microsoft already exposed its licensing strategy more clearly with launch of Virtualization Calculator 2.0, few weeks ago, but customers were still missing an official document to refer to.

Highly recommended reading before starting any virtualization project. Read it at source.



blog comments powered by Disqus


virtualization.info Newest articles
Microsoft announces next version of Windows Server and System Center – UPDATED

October 1st, 2014

Yesterday, Microsoft announced the new name for its Client Operating System: Windows 10. What was also announced was the upcoming features to be introduced in the next version of Windows…

VMware announces Workstation 11 and Player 7 Pro

October 1st, 2014

VMware today announced the release of its type-2 client hypervisor product Workstation (version 11) and Player Pro (version 7). VMware expects to release both products in December this year. Starting…

Release: Citrix XenApp and XenDesktop 7.6

September 30th, 2014

As announced in august, Citrix has now made available version 7.6 of its Virtual Desktop Infrastructure (VDI) product XenDesktop and desktop and virtualization product XenApp.
Version 7.6 contains the following…

Lenovo closes acquisition of IBM’s x86 Server Business

September 29th, 2014

While the fact that Lenovo would take over the x86 Server Business line from IBM isn’t new, today Lenovo announced that a definitive agreement has been made effective October 1st….

Release: Pivotal CF 1.3

September 29th, 2014

The Pivotal Initiative is the organization, born in December 2012 from the merge of EMC and VMware cloud application and big data offerings and well known for Pivotal CF…

Paper: IBM Flex System Solution for Microsoft Hyper-V (2-node) Reference Architecture

September 29th, 2014

IBM has released a paper titled: "IBM Flex System Solution for Microsoft Hyper-V (2-node) Reference Architecture". The paper which contains 50 pages describes a reference architecture for building a 2…

Book: Virtualization 2.0 for dummies

September 29th, 2014

VMware has released a free eBook titled: "Virtualization 2.0 for dummies". The book which contains 88 pages can be downloaded from the VMware website after registration.
The book covers the…

Paper: VMware Virtual SAN Performance with Microsoft SQL Server

September 29th, 2014

VMware has released a paper titled:"VMware Virtual SAN Performance with Microsoft SQL Server", the paper which contains 9 pages shows the result of a scalability study running Microsoft SQL Server…

Release: Oracle OpenStack for Oracle Linux (O3L) 1.0

September 25th, 2014

Oracle has released its Oracle OpenStack for Oracle Linux (O3L). Oracle OpenStack for Oracle Linux is a distribution of the OpenStack (Icehouse) cloud framework integrated with the Oracle Linux Operating…

Paper: VMware Horizon 6 Reference Architecture

September 24th, 2014

VMware has released a paper titled: "VMware Horizon 6 Reference Architecture". The paper which contains 53 pages describes a reference architecture for building a VMware Horizon 6 deployment supporting 2,000…

Microsoft releases new Azure Virtual Machine sizes

September 24th, 2014

Microsoft has released new VM sizes for Microsoft Azure Virtual Machines and Web/Worker roles. The new VM sizes are called D-Series offering up to 112 GB in memory with compute…

Citrix releases tech preview of XenDesktop Windows Azure Pack Gallery Image

September 24th, 2014

Citrix has released a technical preview of a Gallery Image containing XenDesktop 7.5 to be used within Microsofts Windows Azure Pack (WAP).
WAP emulates the Windows Azure experience on-premise so…

Oracle Board of Directors appoints ex CEO Larry Ellison as Executive Chairman and CTO

September 23rd, 2014

Oracle has caused a world wide earthquake with the latest news announcing a change in its management, Larry Ellison, one of the founders of the Oracle empire who remained the…

Red Hat acquires FeedHenry

September 19th, 2014

We are living in a mobile world and the future will be more wireless than ever, we are working with technology all the time using our smartphones and tablets, the…

 
Monthly Archive