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How much memory does CVM need at least?

  • 4 June 2018
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I would like to setup a test environment but I have less memory.

I want to know How much memory does CVM need at least?

AOS version is 5.5
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Best answer by Prad_Math 4 June 2018, 11:36

@Vastsea you can get all the necessary and recommended memory configuration for the AOS 5.5 here @ https://portal.nutanix.com/#/page/docs/details?targetId=Advanced-Admin-AOS-v55:app-cvm-memory-config-u.html

Note: you will need to pick the hardware that you are running your compute and the features to chose the right amount of CVM memory.

If it is just to test and explore (home lab), at least a 16 Gig would do justice to an extend.

Hope that helps!
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@Vastsea you can get all the necessary and recommended memory configuration for the AOS 5.5 here @ https://portal.nutanix.com/#/page/docs/details?targetId=Advanced-Admin-AOS-v55:app-cvm-memory-config-u.html

Note: you will need to pick the hardware that you are running your compute and the features to chose the right amount of CVM memory.

If it is just to test and explore (home lab), at least a 16 Gig would do justice to an extend.

Hope that helps!
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from 5.5 it is must to have 32GB .

for testing you can use 24 GB
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Hi @Vastsea

if any of the answers provided help, please consider clicking the 'Best answer' link - this will help others in the community find the content much faster. Thanks 👍
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@Vastsea you can get all the necessary and recommended memory configuration for the AOS 5.5 here @ https://portal.nutanix.com/#/page/docs/details?targetId=Advanced-Admin-AOS-v55:app-cvm-memory-config-u.html

Note: you will need to pick the hardware that you are running your compute and the features to chose the right amount of CVM memory.

If it is just to test and explore (home lab), at least a 16 Gig would do justice to an extend.

Hope that helps!

Thanks for your reply.
I want to use NUC for building a test environment.

But NUC MAX memory is 32Gig. if I assign 16Gig to CVM. only 16Gig is available. it is not enough for others VM.
Good Day....

You can decrease the CVM Memory to 12GB or 8GB.

Decrease Memory for Controller VM
Login as Root on each Node
  1. virsh list --all
  2. virsh shutdown cvm
  3. virsh setmem cvm 8G --config
  4. virsh setmaxmem cvm 8G --config
  5. virsh start cvm
  6. virsh dominfo cvm
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@Vastsea you can get all the necessary and recommended memory configuration for the AOS 5.5 here @ https://portal.nutanix.com/#/page/docs/details?targetId=Advanced-Admin-AOS-v55:app-cvm-memory-config-u.html

Note: you will need to pick the hardware that you are running your compute and the features to chose the right amount of CVM memory.

If it is just to test and explore (home lab), at least a 16 Gig would do justice to an extend.

Hope that helps!
Thanks for your reply.
I want to use NUC for building a test environment.

But NUC MAX memory is 32Gig. if I assign 16Gig to CVM. only 16Gig is available. it is not enough for others VM.


@Vastsea, that true. 32 Gig NUC boxes limits the cluster memory and the use cases. Probably you can start with 12 Gig for the CVM (or even try a 8 GB unless the CVM services doesn't juice out). This way you might be able to run a few VM's. We haven't tested these situation as they don't qualify as base configuration - Sorry, that I can't provide an affirmative answer.
Note: Use the 5.1.x AOS so you get a decent balance of the features with memory consumption.
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I am happy to report on my NUC cluster (4 Nodes) with the latest version of CE: AHV
VERSION NUTANIX 20190211.279 is working with each CVM at 12 Gig of RAM without issue 🙂