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Item added to your cart. Check out Continue shopping. Add to cart. Couldn't load pickup availability Refresh. What do I get with my purchase? You receive a product key, download link and install instructions How do I get the download? Most products are delivered digitally via email within 30 minutes of purchase. Remote Desktop Protocol RDP is used to provide access to remote desktop services on the server for remote users. Note: This blog post provides an overview of licensing to familiarize you with Windows Server licensing.
Licensing rules can change or be updated for newer product versions. Refer to the Microsoft website and contact Microsoft sales managers before you buy licenses in order to avoid mistakes such as inadvertently violating the license agreement.
Windows Server uses a per-core licensing model for servers, which reflects the trend of producing powerful multi-core processors with a high number of CPU cores and the number of cores per processor increased significantly. Server manufacturers are not increasing the number of processors in assembled servers, but are installing processors with more cores. The general rules that are applied to each physical server running Windows Server on a physical server as a host operating system or on virtual machines on this server are listed below.
The price for 8 dual-core licenses is the same as the price for a single core license. A license for 16 cores is the minimum license you can buy. Similarly, if a motherboard on a server has two sockets, but only one processor is installed, you only need to license all the cores of the installed processor.
OSE is the operating system environment. This is a term that defines one instance of Windows Server running on a physical server or a virtual machine. The virtual OSE term is used when Windows Server is running as a guest operating system Microsoft virtualized server on a virtual machine residing on a physical server. Licensed servers are the servers to which licenses are assigned.
Note: The costs for one Windows Server R2 license for two processors equals the price for 8 dual-core licenses for Windows Server Windows Server cost is often a determining factor when choosing an edition. Windows Server Essentials is the light edition suitable for small organizations and is licensed per server. There are many limitations in this edition.
Windows Server Essentials does not support virtualization. Client access licenses are not required. Windows Server Essentials is well-integrated with Office hosted services. 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.
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