Server 2012 Hyper-V VM CPU Configuration

Nathan Davis193

I have seen a lot of conflicting ideas online about this so I thought I would ask how you do it when setting up a production VM.

How many virtual CPUs do you assign your VM? Do you base it on the number of logical processors? What if you plan on running two or more virtual machines does that affect your settings?

Thanks, I am enjoying the 70-410 course thus far appreciate the help!

Nate

Ronnie Wong

@Nathan-Davis193 ,

There are others in the ITProTV membership that probably have more experience on virtualization than I do and I hope they chime in!

Usually, the rule of thumb for vCPUs on a VM is to use them only if you have applications can used a multiple CPUs. Also, if you only have a Quad-Core, do not assign it more than that (no 8 vCPU, just because you see you can do it.)

Now on the other side of that coin is that you will experience performance issues too that is because of CPU scheduling. I do know of some admins that will say every piece of software is expecting to see 2 cores so you should do it but I would check the min requirements before doing so.

Cordially,
Ronnie Wong
Host, ITProTV