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I am requesting a 16 vCPU 256GB RAM VM (Windows 2012|Host ESX 5.5) from our infrastructure team. However, my infrastructure team would like to know how the VM should be setup. What would be the ideal socket/core setup for this VM?

16 socket x 1 core | 2 socket x 8 core | 4 socket x 4 core

Looking at this blog post it would seem 16 socket to 1 core may be the best setup: https://blogs.vmware.com/vsphere/2013/10/does-corespersocket-affect-performance.html

Can anyone offer and guidance or thoughts?

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    Need to know how the host is configured. You don't want to create a wide VM.
    – Tara Kizer
    Commented May 16, 2017 at 17:10
  • Hi Tara, thanks for the response. What would I ask our infrastructure team specifically? I know the VM Host resides on a BL460 with 2 physical cores.
    – Tho H. Le
    Commented May 16, 2017 at 17:21
  • How are you licensed? What version is it? Is it core or socket based?
    – Tom V
    Commented May 16, 2017 at 17:28
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    Also what will be the memory configuration? You might want to ask about numa
    – Tom V
    Commented May 16, 2017 at 17:30
  • I meant to say 2 socket BL460. SQL Server is licensed by the core. I am unsure about vmWare
    – Tho H. Le
    Commented May 16, 2017 at 17:30

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I found another blog post discussing this same question:

https://blogs.vmware.com/performance/2017/03/virtual-machine-vcpu-and-vnuma-rightsizing-rules-of-thumb.html

I'll likely need to ask for another VM for testing different configurations, but I think we're going to start with 2 Socket | 8 Core configuration.

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