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How do I increase the Core for a CPU on a VM from 8 Core to 12 Core in vSphere?

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Last Modified: 2015-09-02
I have been asked to increase the CPU's core on a VM. It currently has 8 cores total (see screenshot). If I need to increase it to 12 cores total, would I need to increase  "Number of virtual sockets" or "Number of cores per socket"? Also, what number do i need to input to get it to 8 cores total?

cpu.png

Also, how do i know if i have enough hardware resources on the ESX host to support the CPU core increase? I have embedded the following screenshot which show the ESX host that the VM reside on. Do I have sufficient amount of hardware resources?

esx-host-cpu.png
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