The only real CPU requirement is that the CPUs in use are certified and supported for the version of ESXi in use (e.g. 6.5/6.7) as per the regular ESXi HCL.
As per CPU overhead consumed by vSAN itself, approximately 10% should be considered for this (but how much of this it will actually use depends on numerous factors which is another topic entirely):
Memory is a different story and actually depends on the configuration of the Disk-Groups:
Hello Bob, Greetings !
Thanks for your reply...
Could you please explain, "vSAN introduced not more than 10% CPU overhead"... How is it benefited for higher performance.
For higher performance , the CPU overhead should be large or small in percentage ?
Note : Quick answers is much appreciated.
you can't tweak that number Bob mentioned. It is an estimate of what we see on average with customers. If you push an insane amount of IO and have a very demanding workload and various data services enabled that percentage will be higher, if you have a workload not doing anything and no data services turned on it will be lower.
So it comes down to: it depends.
HI Duncan, Greetings!
Thank you, Thank you, Thank you Duncan Sir.
I am so blessed to have a response from a Legend. It is truly an amazing day for me.
Myself and my friends used to follow your blogs for all our day today activities and for deep analysis.
Thank you again,