How may cores do I need for X amount of vCPUs?
Posted on 2014-02-10
I want to know how many vCPUs can I run on a physical host with 4 core Xeon processor?
I am thinking of buying one of those new Mac Pros but the entry level one. This configuration comes with a 4 Core 3.7ghz Xeon processor and 12 GB of RAM, though I think I will bump this up to 16 GB, which can be done cheaply enough.
Do you think this processor will be powerful enough to run upwards of 12 windows virtual machines, IE a few windows 7 and 8 hosts and server 2003/2008/2012 servers as well as a fairly complex GNS3 lab on the actual host operating system.
Do you think I will need to get the 6 core Xeon configuration instead of the 4 core.
I am finding VMWare's (for example) thesis statement description of vCPUs to physical cores a bit obfuscating and ADHD inducing (though entirely relevant I am sure). But I gather, there isn't really a limit logically, and it depends on what you are running on your hosts.
But I just want some opinions based on your actual experience. Do you think a 4 core Xeon is adequate for 12 windows VMs of a mix between server and consumer OS'?
Thanks for everyone's feedback.