Windows Server 2008 R2 Upgrade Paths
Outlines supported and unsupported upgrade paths for Windows Server 2008 R2 SKUs.
To download the documentation Click Here
To use Windows Server 2008 R2, you need:*
Minimum: 1.4 GHz (x64 processor)
Note: An Intel Itanium 2 processor is required for Windows Server 2008 for Itanium-Based Systems
Minimum: 512 MB RAM
Maximum: 8 GB (Foundation) or 32 GB (Standard) or 2 TB (Enterprise, Datacenter, and Itanium-Based Systems)
Disk Space Requirements
Minimum: 32 GB or greater
Foundation: 10 GB or greater
Note: Computers with more than 16 GB of RAM will require more disk space for paging, hibernation, and dump files
Super VGA (800 × 600) or higher resolution monitor
DVD Drive, Keyboard and Microsoft Mouse (or compatible pointing device), Internet access (fees may apply)
* Actual requirements will vary based on your system configuration, and the applications and features you choose to install. Processor performance is dependent upon not only the clock frequency of the processor, but the number of cores and the size of the processor cache. Disk space requirements for the system partition are approximate. Additional available hard disk space may be required if you are installing over a network.
You do not need to enter a product key to evaluate any version of Windows Server 2008 R2 software, however activation is required within 10 days. Failing to activate the evaluation will cause the licensing service to shut down the machine every hour.
For further information please see the Windows Server 2008 R2 Activation page
Download the Microsoft Assessment and Planning Toolkit to securely inventory your existing servers and generate a migration report for Windows Server 2008.
Click here to access Windows Server 2008 system requirements for 32-bit, 64-bit and Itanium based systems.
For more details visit http://www.microsoft.com/windowsserver2008/en/us/system-requirements.aspx