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Get started for free. Supporting products. Get started for free Get started for free. Review Windows Server R2 release notes and system requirements. Register, then download and install. Windows Server R2 evaluation editions expire in days.
After all, we tech things seriously. Item added to your cart. Check out Continue shopping. No reviews. Add to cart. Couldn't load pickup availability Refresh. Take a look below Windows Server Licensing Guide Microsoft Windows Server R2 Datacenter is an industry-leading desktop virtualization and cloud platform for data-driven projects.
Enterprise-class Enhanced features allow you to take advantage of even better performance and more efficient capacity utilization in your datacenter, helping you increase the agility of your business. Simple and cost-effective Windows Server R2 also gives you resilient, multi-tenant-aware storage and networking capabilities for a wide range of workloads.
Unlike Windows Server Essentials non-R2 , you can now run a single instance of a virtual machine. The server licensing rights have been expanded, allowing you to install an instance of Essentials on your physical server to run the Hyper-V role with none of the other roles and features of the Essentials Experience installed , and a second instance of Essentials as a virtual machine VM on that same server with all the Essentials Experience roles and features.
Definition of a socket is a CPU or physical processor. Logical cores are not counted as sockets. A single license of Standard and Datacenter edition covers up to two physical processors per physical server. Standard edition allows up to 2 virtual instances while the Datacenter edition allows unlimited number of virtual instances. For example, a Windows Server R2 Standard edition installed on a physical server with one socket CPU can support up to two instances of virtual machines.
These virtual machines can be Server R2 Standard or Essentials edition. Similarly, if you install a Windows Server R2 Datacenter edition , then you can install an unlimited number of virtual machines. Scenario 2 : Install Server Standard Edition on a physical server with 1 physical processor, running 8 instances of virtual machines.
A total of 50 users will be accessing the server. Remember that a single Standard edition license covers up to two physical processors and up to two instances of virtual machines. Since the requirement is to run 8 instances of virtual machines, we need four Standard edition licenses.
If you add additional Standard edition licenses to that server the number of allowed VOSEs on that particular server will increase by two for a total of six VOSEs on that server. Q: Can I use one Standard license to cover a 1-processor server? The Standard edition license will allow you to license up to two physical processors on a single server; however it does not require that the server has two physical processors.
A: No. Each license can only be assigned to a single physical server. A license is assigned to the physical server. Each license will cover up to two physical processors. After assigning the license s to a physical server, you now have the rights to use the VOSE on that server. Q: Can I mix Datacenter and Standard licenses on the same server? All of the processors on a given server must be licensed with the same version and edition. You can run different editions or older versions of Windows Server software as guests within VOSEs, but you are not allowed to assign multiple licenses of different versions or editions to the same physical server to license the processors on the server.
Q: Can I attach another license of a different version or edition of Windows Server to increase my virtualization rights? A: Yes, you can assign additional Windows Server licenses to a server to increase your virtualization rights.
However the newly assigned licenses will need to adhere to their a ssociated licensing rules. Q: If I want to use the software from an earlier Windows Server version or edition, what are my options?
A: If you have Windows Server R2 Datacenter edition you will have the right to downgrade software bits to any prior version or lower edition. If you have Windows Server R2 Standard edition, you will have the right to downgrade the software to use any prior version of Enterprise, Standard or Essentials editions.
The ability to downgrade does not change the licensing or support terms in whi ch you can use the product; the purchased product Windows Server R2 rights apply. This means that the license will continue to cover two physical processors and the virtualization rights do not change.
In addition, the Client Access License CAL corresponding to the purchased version will apply, as an exception; if you are running a previous version of one of the eligible downgrades you can use the corresponding CAL version if one exists. Here are a few examples. Q: If I have Software Assurance in place at the time that Windows Server R2 is generally available, when will my grant be reflected in my licensing records? You will see your grant in the Volume Licensing Service Center VLSC in addition to immediately being able to use the new product and own the perpetual rights based on your underlying license to the edition of Windows Server R2 that you are entitled to receive.
How to install Windows Server R2 See also:. Free educational video for end-users — Windows Server R2: Licensing and installation For 5 years, virtualization was considered an IT trend. The next step is to add the operation system.
In our case, this will be Windows Server R2.
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