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MIS Systems Thread, SQL 2008 Licensing in Technical; Hyper-V shows 4 virtual CPUs and the hardware uses quad core cpus. The Hyper-V client reports a quad core cpu ...
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    Richie1972's Avatar
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    Hyper-V shows 4 virtual CPUs and the hardware uses quad core cpus. The Hyper-V client reports a quad core cpu (identical to the physical cpu). The MS docs say 1 virtual cpu = 1 physical core (not one physical cpu). So, from this information I am going to be getting a single processor SQL 2008 R2 licence.
    Hopefully this should clear things up for people who may have been in the same position as myself - this has certainly cleared it up for me, as before starting this thread I was far from sure what was the correct licence option.

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    Reading the R2 licensing (as thats what you get now) then that seems to be right (http://download.microsoft.com/downlo...ce-updated.pdf for people who haven't seen it).

    It doesn't matter if it's running on both physical cpus as long as the total vCPUs stays less or equal to the total number of cores/threads in *one* of the physcial processors. It's quite a reasonable system, but the virtualisation benefits only kick in with enterprise and up (multiple VMs under a single licence)

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    djm968 (16th July 2010), Richie1972 (16th July 2010)

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    Good find, this is exactly what I was looking for.

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    Quote Originally Posted by djm968 View Post
    Good find, this is exactly what I was looking for.
    I found the easiest way to work out how many per processor licenses you need is to use the formula shown on page 3 of that quick reference PDF. For example, if you have a server with a Xeon E5640 (4 cores, 8 threads) and configured the SQL VM to have 2 virtual processors, you would only require a single per processor license (2 / 8 = 0.25).

    Btw, did you see post #8 on the first page of this thread.

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