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AllenZhao
Contributor
Contributor

vCPU Maximum per VM for vSphere 5.5 essential kit?

Anyone know about the vCPU max per VM for a paid vSphere 5.5 essential kit?


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I just purchased a Dell R630 server with 2 XEON 8 core CPU, and intend to use 1-2 core for RSA auth manager 8.1 and a 14 cores as workstation for those number hungry geeks.

RSA recommends to use VWware ESXi 5.5, and told me it is completely free - which is good. But the free version of VWware ESXi 5.5 only allow me to configure a 8 cores/vm.

I am trying to see if a paid vSphere 5.5 essential kit would be lifting the max vCPU/vm limit, but after intensive googling online, I got different answers.

For example, some of the post on this forum, said that paid version has the limit lifted. But if you read VMware's document: http://www.vmware.com/pdf/vsphere5/r55/vsphere-55-configuration-maximums.pdf, it says 2 numbers:

Virtual CPUs per virtual machine (Virtual SMP)  - 64

Virtual CPUs per virtual machine 1

which number is right?

So I tried to call VMware to confirm it before purchase, but no-one returns my phone call. (maybe because our company is less than 1000 employee? sigh).

Then I tried to call Dell directly asking the same question, and after 1 1/2 hours waiting, I got this answer (presumably from VMware support specialist):

The max. 8 vCPU / vm would still be there for any paid version of vSphere, because, the XEON CPU has only 8 cores, and therefore, vSphere can only configure VM no more than 8 cores.

Does it make sense at all? For me, this does not sound right at all. Anyone any comment?

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rcporto
Leadership
Leadership

The right number is 64 vCPU per VM... the limit of 1 vCPU per VM is if you are using Fault Tolefance (FT) for the VM, and this limit will be increase on vSphere 6.0 to 4 vCPU.

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Richardson Porto
Senior Infrastructure Specialist
LinkedIn: http://linkedin.com/in/richardsonporto
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