Actually, MS is changing their liscensing in support of virtual operating systems.
New virtualization use rights for Windows Server(TM) 2003 R2 Enterprise Edition and Windows Server "Longhorn" Datacenter Edition enable cost-effective consolidation. Licenses for the upcoming Windows Server 2003 R2 Enterprise Edition will allow customers to run up to four virtual instances on one physical server at no additional cost. Licenses for the Datacenter Edition of the version of Windows Server, code-named "Longhorn," will give customers the right to run an unlimited number of virtual instances on one physical server.
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Actually, MS is changing their liscensing in support of virtual operating systems.
New virtualization use rights for Windows Server(TM) 2003 R2 Enterprise Edition and Windows Server "Longhorn" Datacenter Edition enable cost-effective consolidation. Licenses for the upcoming Windows Server 2003 R2 Enterprise Edition will allow customers to run up to four virtual instances on one physical server at no additional cost. Licenses for the Datacenter Edition of the version of Windows Server, code-named "Longhorn," will give customers the right to run an unlimited number of virtual instances on one physical server.
http://blogs.msdn.com/virtual_pc_guy/archive/2005/ 10/10/479186.aspx