Solved

Restrict Number of VM's per Host

Posted on 2014-07-29
2
344 Views
Last Modified: 2014-07-31
We have a few ESX hosts which run a number of Windows guest OS instances. Due to the restrictions of Windows Standard licensing, I know that we can only have a certain number of VM's running based upon the amount of licences we have.

If all of our ESX hosts (with one processor) have one licence, I believe this means we can run two VM's. If we have HA and DRS active, then VMware may power-up additional VM's on another host due to hardware failure / maintenance or move them around based upon resource demand. If that happens, additional VM's may end up running on another host, breaching the licensing agreement.

If you had three hosts, each running two VM's and you allowed for a single host failure, then you would need to purchase 2 x Windows Standard licenses for each host? This would then accommodate the failure as you would be licensed for an additional two - whether it's an additional two VM's running on one of the remaining hosts or one on each of the remaining.

The problem is, surely DRS can move any of the VM's to any of the hosts, i.e. if you have an application that consumes a lot of CPU and memory, it may end up on one server only (wasting a license) and all the other VM's end up on another host which then breaches the licensing agreement?

Is there any way you can control the amount of virtual machines that can run on a single host to make sure that you are compliant with licensing?

I realise that Datacenter licensing would be a better way to go as the VM sprawl increases, but we want to avoid it for now.
0
Comment
Question by:Hypervizor
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 25

Assisted Solution

by:Mohammed Khawaja
Mohammed Khawaja earned 100 total points
ID: 40226122
You assumption is incorrect.  According to Microsoft, if you have booted up a VM in the last 60 days on a host then they consider those VMs live for licensing purposes.  Therefore, if you have 3 standard CALs, you could not have more than 2 VMs booted on each hosts where logon date is less than 60 days.

What you want to do with ESXi is possible using Host Affinity rules.  Check VMware docs for it.
0
 
LVL 120

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 400 total points
ID: 40226168
Yes, Disable DRS, or use DRS rules to "stick" VMs to Hosts, but then you are not using DRS!

Create Affinity or Anti-Affinity Rules, but if you use these then DRS is really useless!

Purchase a Windows Datacentrer license!
0

Featured Post

U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I will show you HOW TO: Suppress Configuration Issues and Warnings Alert displayed in Summary status for ESXi 6.5 after enabling SSH or ESXi Shell.
Ransomware is a malware that is again in the list of security  concerns. Not only for companies, but also for Government security and  even at personal use. IT departments should be aware and have the right  knowledge to how to fight it.
Teach the user how to use vSphere Update Manager to update the VMware Tools and virtual machine hardware version Open vSphere Client: Review manual processes for updating VMware Tools and virtual hardware versions: Create a new baseline group in vSp…
This Micro Tutorial steps you through the configuration steps to configure your ESXi host Management Network settings and test the management network, ensure the host is recognized by the DNS Server, configure a new password, and the troubleshooting…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question