But in the year , Microsoft started naming server versions after the year operating system initially launched. That left us with Microsoft Windows , Windows Server , which also had an R2 version , also with an R2 , , and , etc.
Each new version of Microsoft Windows Server introduces new functionality. As the saying goes, "nothing lasts forever. The date that Microsoft releases it's last update for a product is known as the end of support date.
And after this date passes, an obsolete OS version will be a much easier target for malware, since it will no longer receive security updates, and therefore vulnerable to newer exploits. Microsoft operating systems are typically supported for at least 10 years. For example, the popular Windows Server launched in April of , and extended support ended in Extended support for Windows Server R2 was scheduled to end in January of , and Windows Server R2 will continue to receive updates until at least October of Therefore organizations should only really be using more recent versions of Windows Server for the sake of security.
When you buy a car, there are many different options available for the same model. For example, there might be a basic economy option, a luxury option with leather seats and a sunroof, and sport edition with bigger wheels and a more powerful engine.
In other words, each edition of a car has a different price point and feature set tailored to groups of customers with different budgets and needs.
The same goes for Windows Server editions. Each option includes functionality that makes sense for companies depending on their size and budget. For example, different editions might support for a different number of users. To help everyone understand some basic differences between OS editions, let's break down the different options for Windows Server R The Foundation edition which isn't available in Windows Server is also limited to 15 users, making this edition suitable for only very small offices.
Foundation is available through OEMs only, which typically means it comes preinstalled on computers you buy from companies such as Dell and HPE. Essentials formerly SBS, or Small Business Server is an easy-to-set-up server solution that supports up to 25 users and 50 devices — which limits it to small offices. Standard has no cap on users, but unlike with Foundation and Essentials you will have to separately purchase Client Access Licenses CALs depending on how many people you need to support.
If you're interested in virtualization, this edition allows you to use Hyper-V to run up to two virtual instances of the operating system additional virtual instances of Windows Server will require cost extra on a single piece of physical hardware, making the Standard edition suitable for a lightly virtualized environment.
Datacenter is the top of the line, and most expensive Windows Server Edition. Windows Server R2 Datacenter is almost identical to the Standard edition with one big exception. With a Datacenter license, you can run an unlimited number of virtual instances of Windows Server guests on a single two-processor computer.
This small difference has a big impact, as companies might save big by running dozens of OS instances on a single server. While pricing on Windows Server R2 and are the same, if you are going with a Standard or Datacenter license Windows Server or newer, there are some key changes you need to be aware of. So if you have a server containing 2 processors with 24 cores between them, in with Windows Server you would only have to buy a single Standard or Datacenter license.
With Windows Server , you have to buy licenses to cover all 24 cores. It gets pretty complicated, as there are a lot of rules, but the key takeaway is that if you have a core server, the costs are pretty much the same. However, OS licensing might be pricier on servers with a higher core density.
Despite the per core licensing change, the virtualization rules remain the same in Windows Server and newer. Once you have licensed all of your cores in a server, with the Standard edition you get 2 Windows Server guest OS licenses, compared to an unlimited number with Datacenter. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question. For example, if you want to know what 'Advanced Adaptive Query Processing' is, read the documentation pages on Adaptive Query Processing, and then ask questions specific to that feature.
Installation requirements vary based on your application needs. The different editions of SQL Server accommodate the unique performance, runtime, and price requirements of organizations and individuals. The SQL Server components that you install also depend on your specific requirements. The following sections help you understand how to make the best choice among the editions and components available in SQL Server. There are no limits under the Core-based Server Licensing model.
You get built-in features for data classification, protection, monitoring and alerts. Convert data into actionable information by leveraging the superior reporting capabilities of SQL Server The Power BI Report Server comes included with the package that delivers reports across multiple devices. Performance Features of Microsoft SQL Enterprise The Standard edition only has three of the eleven features in scalability and performance included in the Enterprise edition.
Replication Features of Microsoft SQL Enterprise In discussing the feature of replication, the Standard edition has most of the features including SQL Server change tracking, merge replication, and snapshot replication.
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