The system partition will need extra space for any of the following circumstances: For more information about Server Core and Minimal Server Interface modes, see Windows Server Installation Options. For the smallest possible installation footprint, start with a Server Core installation and then completely remove any server roles or features you do not need by using Features on Demand. A server in Server Core mode is about 4 GB smaller than the same server in Server with a GUI mode. This minimum should allow you to install Windows Server 2012 R2 in Server Core mode, with the Web Services (IIS) server role. īe aware that 32 GB should be considered an absolute minimum value for successful installation. Migration, which might vary considerably depending on the server roles you have installed, is discussed in detail at. Migration means moving from your existing operating system to Windows Server 2012 R2 by transferring to a different set of hardware. For detailed information about upgrading by any of these methods to Windows Server 2012 R2, see upgrade options Even while staying on the same hardware, some server roles might require specific steps to ensure a smooth upgrade. You can upgrade from an evaluation version of Windows Server 2012 R2, a current retail version of certain editions of Windows Server 2012 R2 (an action known as “license conversion”), a previous retail version of certain editions of Windows Server, or from a volume-licensed edition of Windows Server 2012 R2. Upgrade means moving from your existing operating system to Windows Server 2012 R2, while staying on the same hardware.

Specifically, a clean installation requires deleting the previous operating system. Installation is the basic concept of getting the new operating system on your hardware. We use the following terms to distinguish among different actions, any of which could be involved in a new Windows Server 2012 R2 deployment. The process of moving to Windows Server 2012 R2 might vary greatly depending on which operating system you are starting with and the pathway you take. This topic addresses the information you need to install Windows Server® 2012 R2. Applies To: Windows Server 2012, Windows Server 2012 R2

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