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note: the above applies when you are using the Server2008 (hyper-v) as physical host and running VMs in that.<br />
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in the case of using ESX as the host, not sure if there is any catch...<br />
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check out the docs in Resources sections in <a href="http://www.microsoft.com/licensing/about-licensing/virtualization.aspx" rel="ugc">http://www.microsoft.com/licensing/about-licensing/virtualization.aspx</a>
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note: the above applies when you are using the Server2008 (hyper-v) as physical host and running VMs in that.

in the case of using ESX as the host, not sure if there is any catch...

check out the docs in Resources sections in http://www.microsoft.com/licensing/about-licensing/virtualization.aspx [http://www.microsoft.com/licensing/about-licensing/virtualization.aspx]

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ok, for example I've got dual Quadcore Xeon so in thisc ase i shall get 2x Win Data Center license then ?<br />

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ok, for example I've got dual Quadcore Xeon so in thisc ase i shall get 2x Win Data Center license then ?


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We are adding a server as a ESX virtual host and have a question about licensing for the MS Server OS's we will run as virtual instances. &nbsp;We are looking a the datacenter edition of Server 2008 so we can have unlimited virtural machine on the physical host. &nbsp;My question is can the virtual instances licensed by the datacenter edition be of another edition (ie. Standard or Enterprise)? &nbsp;Also is Datacenter edition licensed per processor on the physical host.
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We are adding a server as a ESX virtual host and have a question about licensing for the MS Server OS's we will run as virtual instances.  We are looking a the datacenter edition of Server 2008 so we can have unlimited virtural machine on the physical host.  My question is can the virtual instances licensed by the datacenter edition be of another edition (ie. Standard or Enterprise)?  Also is Datacenter edition licensed per processor on the physical host.

MS Server Datacenter license with virualization

Microsoft Virtual Server was a virtualization solution that facilitated the creation of virtual machines on the Windows XP, Windows Vista and Windows Server 2003 operating systems. Virtual machines are created and managed through a web-based interface that relies on Internet Information Services (IIS) or through a Windows client application tool called VMRCplus. Features included Linux guest operating system support, Virtual Disk Precompactor, symmetric multiprocessing (SMP), x64 host operating system support, the ability to mount virtual hard drives on the host machine and additional operating systems support, including Windows Vista, and a volume shadow copy writer.

Microsoft Virtual Server

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.