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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?

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
VMwareWindows Server 2008Windows Networking

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gheist

8/22/2022 - Mon
SOLUTION
David Johnson, CD

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Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)

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joukiejouk

ASKER
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?
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)

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.
gheist

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
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