Exchange 2010 vCPu Licensing VMWare

Hi we have a CAS server which resides on datacentre 2008 R2 on a VMware Host. What would be the maximum number of vCPU's which can be under the microsoft licensing.

Thanks in advance
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cwstad2Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Windows Server 2008 R2 x64 without Hyper-V Enabled

Windows Server 2008 Datacenter Edition supports up to 64 sockets and up to 256 logical processors

Source
http://blogs.technet.com/b/matthts/archive/2012/10/14/windows-server-sockets-logical-processors-symmetric-multi-threading.aspx

so 64 sockets, is what is limited by the Microsoft Datacenter Edition License.

Whether you can add that many to a VM, would depend on your version and license of VMware vSphere. (ESXi 5.5 - max 64 vCPU per VM, ESXi 6.0 - max 128 vCPU per VM)

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cwstad2Author Commented:
Thanks Andrew, we are on 5.5. Should i be able to hot add the vCPU with datacentre? I edit the settings and they are greyed out
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You should be able to hot add vCPU, but this option needs enabling first in Options, under VM settings.
cwstad2Author Commented:
Thanks Andrew
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
no probs!
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Windows Server 2008

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