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
Pluribus Networks raises $50 million in Series D funding

January 29th, 2015

Pluribus Networks has announced that it has closed a $50 million Series D funding. The round was led by Temasek Holdings, an investment company based in Singapore with a…

VMware results for Q4 2014 and full year

January 28th, 2015

On January 27, VMware released the financial results for the third quarter and full year 2014.
The revenues for the fourth quarter were $1.70 billion for an increase of 15% compared…

Ravello Systems raises $28 million and announces major release of HVX

January 27th, 2015

Cloud computing startup called Ravello Systems announces to have secured $28 million funding and to have boost a total of $54 million capital led by Qualcomm Incorporated, through its…

Amazon updates AWS plugin for Microsoft System Center Virtual Machine Manager

January 22nd, 2015

In October last year, Amazon released the AWS System Manager for Microsoft System Center Virtual Machine Manager (SCVMM). AWS System Manager is an add-in for SCVMM which allows customers to…

VMware announces vCloud Air Disaster Recovery

January 22nd, 2015

VMware has announced that later this quarter it will release an updated disaster recovery solution for its IaaS solution vCloud Air (formerly vCloud Hybrid Service). The solution which will be…

Paper: Cisco Unified Computing System with VMware Horizon 6 with View and Virtual SAN

January 20th, 2015

Cisco and VMware have released a paper titled: "Cisco Unified Computing System with VMware Horizon 6 with View and Virtual SAN". The paper which contains 59 pages describes a reference…

Release: Xen Project Hypervisor 4.5

January 19th, 2015

The Xen Project, the community which develops the Xen hypervisor under the GNU General Public License (GPLv2) last week announced the availability version 4.5 of the Xen Hypervisor. With major…

Microsoft and Persistent Systems release solution for Azure IaaS data center migration

January 15th, 2015

Microsoft, together with partner Persistent Systems has developed and released a tool which helps customers to move complete Infrastructure as a Service (Iaas) deployments from one Microsoft datacenter to…

Citrix announcements from its annual Summit partner conference

January 15th, 2015

Before and during its annual Summit partner conference, held on January 13 and 14, Citrix made several announcements. First of all Citrix announced the acquisition of Sanbolic, which virtualization.info already…

Citrix announces XenServer 6.5 – UPDATED

January 13th, 2015

Citrix today announced the next version of its virtualization platform XenServer which is a commercial product based on the open-source Xen Project hypervisor. XenServer 6.5 will be the follow up…

Citrix Acquires Sanbolic

January 12th, 2015

Citrix today announced that its has completed its acquisition of Sanbolic. Sanbolic which has a product called Sanbolic Scale-Out Platform which can be seen as an aggregation of both local…

Survey: State of the VDI and SBC union 2015

January 12th, 2015

Two years ago, Project Virtual Reality Check (VRC) started a survey asking participants to provide more insight in the non-technical issues related to Virtual Desktop Infrastructure (VDI) and Server Based…

Paper: VMware Mirage 5.0 Reviewer’s Guide

January 9th, 2015

VMware has released a reviewers guide for its End User Computing solution Horizon version 5. The paper titled: "VMware Mirage 5.0 Reviewer’s Guide" contains 209 pages and allows readers to…

Microsoft updates Azure with availability of G-series, Docker image support and a public preview of Azure Key Vault

January 9th, 2015

Microsoft yesterday announced several updates to its Microsoft Azure cloud platform. Updates include the availability of the new G-series type of VM’s, the availability of Ubuntu image with a…

 
Monthly Archive