How To Upgrade Windows Server 2008 R2 To Windows Server 2012

If  i were to upgrade my existing windows server 2008 R2 Enterprise server to windows server 2012 i would first choose the edition and then i would check the upgrade paths. I have created a table which shows whether you can upgrade to windows server 2012 with you present operating system.

1) Windows Server 2012 Datacenter Edition – The Datacenter edition is designed for large and powerful servers with up to 64 processors and fault-tolerance features such as hot add processor support. This edition is available only through the Microsoft volume licensing program and from original equipment manufacturers bundled with a server.

2) Windows Server 2012 Standard Edition – This is a fully functional edition of Windows Server 2012. Frankly speaking there is no much difference between Datacenter and Standard Edition of Windows Server 2012. What differentiates these 2 editions is the number of virtual machine instances that is permitted by the license. A Standard edition license will entitle you to run up to two VMs on up to two processors. A Datacenter edition license will entitle you to run an unlimited number of VMs on up to two processors.

3) Windows Server 2012 Essentials – The Essentials edition is suited for small organizations, this edition includes all the features of Standard and Datacenter edition except the Server Core, Hyper-v and ADFS (Active Directory Federation Services).

4) Windows Server 2012 Foundation – This edition is designed for small businesses that require only basic server features such as file and print services and application support. The edition includes no virtualization rights and is limited to 15 users.

The Windows Server 2012 evaluation software is available in Standard and Datacenter editions, you can download Windows Server 2012 from here :- http://technet.microsoft.com/en-in/evalcenter/hh670538.aspx.

In this post i will be showing you how to upgrade a windows server 2008 R2 Enterprise SP1 to Windows Server 2012 Datacenter. Note that the existing server is in workgroup, do not consider this post to upgrade your domain controller to windows server 2012. I will be creating a separate post to show the upgrade of domain controller running on windows server 2008 r2 to windows server 2012.

Insert the windows server 2012 DVD into the DVD-ROM and click on Run Setup.exe.

On the Windows Setup screen, click on Install now.

If you want to get security updates and latest drivers for your operating system select Go online to install updates now. We can also do a windows update once the upgrade is completed, so select No, Thanks.

Enter your product key for windows server 2012 and click on Next. In this step i have entered server 2012 Datacenter edition key. Click on Next.

Server core installation has no Server Manager or any other MMCs to manage roles and features. The management must be done either remotely from a client machine or through the command prompt or Powershell at the console. There is no Start menu, no desktop Explorer shell, no Microsoft Management Console, and virtually no graphical applications. All you see when you start the computer is a single window with a command prompt. In this step i will select the second installation mode, Windows Server 2012 Datacenter (Server with a GUI). Click on Next.

Select Upgrade: Install Windows and Keep files, settings and applications. This will keep existing files, settings and applications and upgrade our server to windows 2012.

The upgrade will take close to 20 minutes. Sit back and relax until the upgrade is complete.

The upgrade from windows server 2008 R2 Enterprise to windows server 2012 Datacenter is complete. Let’s login to the server and check for the edition.

Click on Server Manager, Click on Local Server, check the properties of server. We see that the operating system version is Microsoft Windows Server 2012 Datacenter. The upgrade process has been completed successfully.