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joukiejouk

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

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?

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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?

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David Johnson, CD
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joukiejouk

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How do we justify/calculate that we have enough resources on the VM Cluster to failover if one of the physical host hardware is down?
Add up all the memory, in the total number of VMs, does a single host have enough memory for all your VMs ?

Memory is often the bottleneck not CPU.

But if you work on 5-6 VMs per per Host Core.

You can also check how many slots are in use in the cluster as well.
vcpu is not a CPU core. You can have max 32 or 64 idle vCPUs per CPU core on host machine.
do not change "cores per socket" away from 1 unless you want to use vNUMA