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Show Ignored Content. Thema: VMware Exsi 6. The virtual machines run on five hosts, each of which has two physical In other words, you can install Windows Server Standard on a host machine and run two virtual machines with Windows Server Standard as a guest OS.
Windows Server Standard running on a host used for virtualization as a hypervisor can be used only to install Hyper-V to run VMs. Using the host OS as a full-featured server with two virtual servers is not allowed.
You cannot use three full-featured servers one physical and two virtual if you have the Standard license that covers two VMs and one physical server. The licensed Datacenter edition covers Windows Server installed on a host and allows you to run an unlimited number of virtual machines with Windows Server installed as a guest OS.
A Windows Server Essentials vs Standard comparison is outside the scope of this blog post. CAL licenses are required for both Standard and Datacenter editions.
For example, if you have licensed Windows Server Standard for all processor cores of a physical server and install Windows Server Standard on a host with the Hyper-V role enabled, then you can run two VMs with Windows Server Standard.
If you need to run 4 virtual machines on a server, then you need to buy one more license a set of two-core licenses to cover all cores for this server the total number of VMs is four and Windows Server Standard is used in this example.
One Standard license covers two virtual machines. If you need to run 4 VMs on a physical server that has two 8-core processors, you must buy 16 dual-core Standard licenses for Windows Server Two license sets cover all cores twice and allow you to run 4 VMs. If you need to run an odd number of VMs on a host, you need to buy licenses for the next even number of VMs.
If you need to run 4 VMs on the same physical server that has two 8-core processors but with the Windows Server Datacenter license, you need to buy 8 dual-core Datacenter licenses for Windows Server VM licensing order: Physical cores must be licensed first and only after that virtual machines must be licensed.
Taking into account the current price for Windows Server licenses, it may be better to buy Windows Server Standard licenses if you are going to run up to 12 virtual machines on a single physical server. If you need to run 14 VMs or more, the more rational decision is to buy Windows Server Datacenter.
VM migration is especially needed if you run VMs in a cluster. In this case you need to buy the number of licenses to cover all VMs on all hosts for each physical server as if you are migrating all VMs from all hosts to one host. In this case, each VM is licensed to migrate to any host. You can migrate a Windows Server license between physical servers once every 90 days.
The Hyper-V virtual machine activation binds to the activated instance of Windows Server installed on a physical server that acts as a hypervisor. Virtual machines can be activated without an internet connection. There is no need to manage product keys for VMs. Activation is preserved if licensed VMs are migrated between licensed hosts. We have two physical servers. Each server has one 6-core processor.
Two VMs must run on each server. Windows Server Standard license can be used. We need to buy 8 dual-core licenses for each server because it is not possible to buy less than 8 double-core licenses to license a physical server even if there are less than 16 cores. Note: VMs used in examples are running Windows Server of the edition mentioned in the corresponding example.
Each server has one core processor. Four VMs must run on each server, and Windows Server Standard is installed on each physical server. We have to buy 16 double-core licenses or two core licenses for each server. In total, we buy four core licenses for the whole Windows Server environment. The configuration is the same as in Example 2. Each server has 4 VMs and these VMs must be able to migrate between servers. As a result, we need to buy an additional 16 double-core licenses for each server.
Finally, each server has 32 double-core licenses or four core licenses. As a result, four additional core licenses must be bought for each physical server. Totally the equivalent of 80 cores must be covered on each server and there must be 40 double-core licenses or 5x16 core licenses for each server.
There are three servers. The first server has two processors and each processor has 20 cores. The second server has one core processor. The third server has one core processor. VMs running Windows virtual servers need to be migrated between hosts. Windows Server Datacenter is used in this case and, as such, we need to take into account the terms of Microsoft datacenter licensing. First of all, we must buy licenses for the server cores.
Server 1. A total of 40 cores must be licensed 20x2. The base core license covers 16 cores. We need to license 24 cores in addition to that and buy one more core license and two 4-core licenses. You can simply buy 20 double-core licenses.
Server 2.
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