Understanding Windows Server Hyper-V Licensing - vembu.

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Virtualisation Licensing for WS & WS R2 | Aidan Finn, IT Pro.

 

You license the hyper-v host. Some general info below - Each host needs to be licensed. For each additional 1 or 2 VMs, all the physical cores in the server must be licensed again. What I can do? Are you installing on a physical box or a virtual machine? If you don't know the hardware details maybe you can ask the hardware vendor what they supplied. You may want to ask the service provider to supply the licensing or consider standing up on Azure.

OK - finally got this sorted out - I able flabbergasted how little documentation was on Microsoft's website and other support sites. I swear it seems like I am the very first person to ever attempt this! I had to first apply the host machines 25 digit code to the VM. Starting to update components Note that the licensing procedure is as follows: first the physical cores are covered, and then the virtual machine instances.

According to the current Microsoft prices, it is worth to buy the Windows Server Datacenter edition if you are going to run 14 or more virtual machines on one physical host. If you use virtualization on your physical server with Windows Server , you can use the host OS only to maintain and manage the Hyper-V role and virtual machines. You cannot install Windows Server on a physical server, run two VMs on it and get three full-fledged Windows server instances for your tasks.

Software Assurance SA provides the right to transfer the product license between physical hosts for most Microsoft server products. But Windows Server is an exception to this rule. According to the licensing agreement, the license can be migrated between the hosts once in 90 days. How to license a virtualization farm, in which VMs can move between hypervisors host OSs? In this scenario, you will have to buy that number of licenses for each physical server covering the maximum number of virtual machines that can be run on it at any time including the high availability scenarios when all virtual machines of the farm are moved to the one of the hosts.

In the case of the Datacenter edition, one set of licenses will be sufficient for each physical host, covering all cores in the minimum configuration, 8 Datacenter dual-core licenses.

Since this license allows you to run an unlimited number of VMs. Therefore, you should choose the Windows Server license depending on the maximum number of VMs on a single host. Below are some examples of calculating Windows Server licenses for physical hosts when using virtualization. Example 1. There is a Hyper-V cluster of 5 hosts. Each server has 2 processors with 20 cores. Each will run 10 virtual machines.

Because 5 servers are united into HA Hyper-V cluster, which means that up to 50 virtual machines can be running potentially on each host during VM migration failover.

Accordingly, it is more profitable to purchase the Datacenter licenses. Example 2. The branch office has 1 server with 2 sockets with 4 cores each, on which 4 virtual machines are running. How many Windows Server licenses do I need to purchase? The server has 8 cores. Under the terms of licensing — you need to cover at least 16 cores. This will allow you to run 2 VMs. We have some Online Events. Log in Join. Spice 1 Reply 5. View all topics. Matthew-Haigh This person is a verified professional.

Verify your account to enable IT peers to see that you are a professional. OP haider. In this case how many servers I can run under 1 license 2 processor license Thanks for the help. Please mark the answer as answered if you found this useful. Regards flag Report. Little Green Man This person is a verified professional.

 

Windows Server R2 | Microsoft Volume Licensing.Windows Server R2 | Microsoft Volume Licensing

 

Limits Of Licensing Two Or More Virtual Instances The third thing you need to know is that when you are virtualizing two or more instances of Windows Server, you are limited in how you can use the physical instance. Small Businesses Have Options The last thing you need to know is that if you are a small business with only one server, you have options. In that situation, you can do one of the following: Use one physical instance as a normal Windows Server, or Use one physical instance as a normal Windows Server, and also run one instance of Windows Server in a VM, or Use the physical instance as a hypervisor only, and run two instances of Windows Server in VMs.

Microsoft licensing can be confusing, but Mirazon is here to help. Please reach out to us with all your licensing questions. You can call us at or send an email to purchasing mirazon. Previous Post Coverage Vs. Share Tweet Share Pin. Contact Lyndon Farm Ct. Sign up for our newsletters to get important details on news and industry trends in IT, straight from the Mirazon experts.

I could download and install it as the platform for my already licensed servers. Now if you choose to add new VMs running WS R2 you will need to purchase licenses at which time you would get virtualization rights and would at that time have to decide whether you wanted to continue with Hyper-V server or simply move to Hyper-V on Windows Server R2.

Automate and Integrate with System Center! November 20, 3 min to read. Chris Henley. The beauty is that you win either way and Hyper-V stays the way it should always be.

He is a published author and a regular speaker and presenter at user groups and major technology conferences around the world. He is fun and energetic in his style of communication and has a way of making technical concepts easy to understand. He loves talking about what technology can do. Previous post Next post. Get weekly blog updates. Cheers for trusting us with the spot in your mailbox!

In the case of the Datacenter edition, one set of licenses will be sufficient for each physical host, covering all cores in the minimum configuration, 8 Datacenter dual-core licenses. Since this license allows you to run an unlimited number of VMs.

Therefore, you should choose the Windows Server license depending on the maximum number of VMs on a single host. Below are some examples of calculating Windows Server licenses for physical hosts when using virtualization. Example 1. There is a Hyper-V cluster of 5 hosts.

Each server has 2 processors with 20 cores. Each will run 10 virtual machines. Because 5 servers are united into HA Hyper-V cluster, which means that up to 50 virtual machines can be running potentially on each host during VM migration failover. Accordingly, it is more profitable to purchase the Datacenter licenses. Example 2. The branch office has 1 server with 2 sockets with 4 cores each, on which 4 virtual machines are running. How many Windows Server licenses do I need to purchase?

The server has 8 cores. Under the terms of licensing — you need to cover at least 16 cores. This will allow you to run 2 VMs. To run additional 2 VMs, you need to buy another set of core licenses. So if i have one VM in cluster of two nodes and fail happens VM migrates from first node to second host node. Do i need call MS and activate it with key from second node?

How long will be grace period for VM on second node? The virtual machine must be activated only once. When VM migrate to another host in cluster reactivation is not required.

Windows Server restricted the maximum number of processors to 64, both for Standard and Datcenter editions. Check the BIOS settings. If your server is virtual — check virtual hardware configuration.