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Licensing and Hyper-V VM Guests - Microsoft Q&A 

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Understanding the free Hyper‑V landscape — Versions and virtualization rights

 

Hello all. I've Googled the cheese out of this but can't seem to find a definitive answer, I'm probably being a buffoon so feel free to call me one:.

We have one host running Server Standard edition with the Hyper-V role installed. We have just licensed it and installed 3 guests, all running R2 Standard edition. I was led to believe that if you use Standard edition, Hyper-V only allows you to have 2 VM's running without having to purchase extra licenses. However, our 3 VM's seem to have all fully licensed themselves without me doing anything! Is this normal behavior?

Does Hyper-V allow more than 2 VM's without a license when you run instead of ? Don't get me wrong, I'm not complaining! I'd just like to be enlightened further as to how Hyper-V works. Hyper-V is free.

You can run as many VM's as you want on it. You do have to license the operating systems that run on the VM's. Correct, Hyper-V doesn't care how many VM's you run; it wouldn't be very useful if it did.

The virtual machines must be licensed. If the host is only being used as a hypervisor, it's free the license applies to the VM. For three, you'd need an extra seat or a single R2. Here again, Hyper-V doesn't care if you use downgrade rights. Windows Server licensing has activation, but it's still a bit of an honor system, there's no way for Hyper-V to know what licenses you're applying. Today, the only license key I have entered into any machine, is the server, which has a Hyper-V role.

After I did this, three R2 guests became activated. Your responses don't quite explain to me why this happened. I'm fully aware that each guest VM on a host must be licensed, but I didn't license any of them. They seemed to license themselves after I licensed our host which is going to have other roles other than Hyper-V, so it's not a standalone Hypervisor. If you want more seats you need to buy additional single licenses or move to a higher SKU.

With Datacenter you get an unlimited number of Datacenter VMs. And no Wayne, we don't have any kind of license server. All we have is a license agreement with Microsoft. It says: "9 days to activate. Activate Windows now". The licencing comes, I believe, from the licence key you enter at installation are the guests on a trial activation?

As far as I know, you can activate the licence string many times, but whether you have actually purchased the software relies on honesty. I believe what the others are saying is that when you purchase Server software, it gives you the ability, within the licence conditions, to consume a licence for the main host machine and an additional couple to use for VM's running on the same machine.

Stephen, my point exactly, we want to make sure we are being honest and not cheating the system in any way. No Wayne, no one has entered any key into any of the guests. The only key that's been entered is a Standard edition key from a Microsoft agreement, right into the host. So how have three VM's become fully activated? Question on this: if i had mutliple Hyper-V hosts in a "cluster" i. The datacenter edition would be a cost effective option IF we chose to keep all the VMs on a single host.

Good question. You would need to license both hosts, unless you install Hyper-V straight onto a barebones system, not as a role. IMO Datacenter edition is rarely worth the money unless you're going to have over ten guests.

Unfortunately Blaster, your thread highjack still hasn't helped me find an answer to my question. I was in a quandry with this as I have 4 servers, each has only one physical Processor with 4 cores per Processor, so I was concerned about the idea of having to have 16 licenses When I upgrade, I'm going to Datacenter. You need to license every VM you install activate each one separately.

In your case you have the right to install 2 standard VMs based on To use a R2 system instead you need to check you license agreement. There are systems that have a separate virtual key on the license sticker. This key is used for the included VMs. Those systems got activated without any key entered?

If this is the case you need to check if they got the key from an KMS server. We used a legitimate Windows I have installed a copy of this. ISO on my Virtualbox application on my laptop, and this has indeed asked to be licensed.

The host does not touch the software inside the VM at all. Maybe the VMs get the key from the mainboard of your server. Although this one would be just a thought.

Did you check the key with Spiceworks? Is it completely new or used on an other system? Maybe you call Microsoft or the server vendor. If Microsoft gives the ok, everything would be fine. I must admit, me and my superior did look at each other and say, "this is weird, maybe the system is clever enough to grab the key from the host" - but if you think about it, that would not work, as the guests require a key, not a key, which is what the host has.

Hey Michael. I doubt this is what is happening to you, since you need to go through the trouble of installing VAMT first and using the tools to select this particular method, but I thought it was worth a mention. Thanks for that, I don't know too much about that if I'm honest. The server doesn't have AD on it at the moment, so I'm not sure what is causing it to be honest.

What version of do you run? I think Standard comes with 2 virtual VM's licensing inbuilt. Datacenter are Unlimited. So if you are Standard may be two of them got it from the host, but I am not sure how the third one activated. May be worth checking with your Microsoft Accounts manager if you are on a Software Assurance program or something similar. Michael to help you answer your question Exchange will let you know how many Cal licenses you need but there is not way for you to installed is just a document that you have to have in case you get a call from microsoft asking to prove the licenses that you have.

Having that in mind if you want to be honest and be legit keep the 3rd vm and you should go and get a valid license for that 3rd server. This topic has been locked by an administrator and is no longer open for commenting. To continue this discussion, please ask a new question. There doesn't seem to be a reliable way to get the timestamp attribute from different sources that may be logging it.

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Login Join. I've Googled the cheese out of this but can't seem to find a definitive answer, I'm probably being a buffoon so feel free to call me one: We have one host running Server Standard edition with the Hyper-V role installed.

Wayne Andersen. OP Michael Hi Wayne Thanks for your reply, however that doesn't quite answer my question. Mike flag Report. Bryan Doe. Spice 1 flag Report. Do you have a license server that could have given them the license key? We don't want any more