vmware esxi 5

IKtech
IKtech used Ask the Experts™
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I have read that with ESXi 5 you can only use up to 32 GB of physical memory.  I have two servers with 48 GB of memory and i want to use them as esxi hosts but i also want to be sure that I understand this correctly.  From what i have read even though i have 48 gb i can only use 32 gb distrubuted between the guest VMs.  I have also read that this 32 gb restriction is per VM and not a restriction on physical memory for the host server.  If this is a restriction on the physical memory for the host i am considering getting the essentials kit licenses that allows 3 hosts (2 CPUs each) and 192 GB of memory.  

Please let me know what all you experts think!  I appreciate the advice.
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Larry LarmeuPrincipal Consultant

Commented:
It is not a limit of the physical memory, it is a licensing thing.  With vSphere Standard you can entitle 32GB per CPU.  Here's a Whitepaper discussing the licensing scheme:

http://www.vmware.com/files/pdf/vsphere_pricing.pdf
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
THE FREE VERSION IS LIMITED TO 32GB PER SERVER.

If you license and purchase VMware vSphere Essentials for $500, you will be licensed to use 32GB per Server, per CPU, so that's 64GB per server, which will cover your needs.

Essentials, gives you three licenses for three hosts, 2 Processors, and vCenter Server.

Author

Commented:
So your saying i should be fine with esxi and the memory i have?
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Correct, only if you exceed 64GB per server, you will need to purchase an alternative license, because Essentials cannot be upgraded.

Author

Commented:
@hanccocka

Your talking about the essentials kit correct?  I think we will want to upgrade to essentials plus at some point to take advantage of vmotion and HA.  Do you know if there is an upgrade path from essentials to essentials plus?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Yes, I am referring to Essentials, yes there is an Upgrade path to Essentials Plus and other kits.  But you cannot just Upgrade by purchasing a Standard License. You have to Upgrade to a kit.

If you want to go to Plus in the future for HA and vMotion, you are on the correct track.

Author

Commented:
i have read that the vRAM entitlement for the essentials kit is 192gb.  With my two hosts i have 96 GB of physical RAM.  So i am thinking i could setup 4 guest VMs on each host ( 8 total) with 10GB of memory each (4 VMs * 10GB * 2 hosts = 80gb vRam used).  I know this wouldn't be possible using the free version as it will only allow 32GB of vRam per host (2 hosts * 32GB vRAM = 64GB).

Am i correct that the vram entitlement in the essentials kit will allow me to use almost all of my physical RAM (96 GB) for vRAM of all my VMs on two hosts (96gb / # of VMs)?
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
that is correct. also you have access to use vCenter Server, use templates, cold migration, clone and to manage you two hosts, or three in the future, also unlocks the Storage API to make it easier for Backup HOT VMs

Author

Commented:
thanks

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