Memory and Processor Requirement of vSAN

[SATHISHVIJAY]

Hi Friends,

What is exact Memory and Processor Requirement of vSAN 6.x ?

How much each Host's memory and cpu requirement as an eligibility criteria ?

[a_p_ · Accepted solution]

Please see whether Requirements for Enabling vSAN  answers your questions.

André

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[TheBobkin]

Hello Sathish,

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):

Designing and Sizing vSAN Hosts

Memory is a different story and actually depends on the configuration of the Disk-Groups:

VMware Knowledge Base

Bob

[SATHISHVIJAY]

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.

[depping]

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.

[SATHISHVIJAY]

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,

Sathish Vijay