Windows Server 2008 R2 trial

Download the Windows Server 2008 R2 Trial Software
Windows Server 2008 R2 builds on the award-winning foundation of Windows Server 2008, expanding existing technology and adding new features to enable organizations to increase the reliability and flexibility of their server infrastructures. New virtualization tools, Web resources, management enhancements, and exciting Windows 7 integration help save time, reduce costs, and provide a platform for a dynamic and efficiently managed datacenter. Powerful tools such as Internet Information Services (IIS) version 7.5, updated Server Manager and Hyper-V platforms and Windows PowerShell version 2.0 combine to give customers greater control, increased efficiency and the ability to react to front-line business needs faster than ever before.
Please review the Windows Server 2008 R2 system requirements before you proceed. Actual requirements will vary based on your system configuration, and the applications and features you choose to install.
Get the download
Windows Server 2008 R2 Evaluation is available via two separate downloads - a compilation edition (Standard, Enterprise, Datacenter and Web) and an individual Itanium edition. Just choose the version that fits your requirement, and download the evaluation. Need help determining which version is the best fit for you? Check out the Windows Server 2008 R2 Editions page.

http://www.microsoft.com/Windowsserver2008/en/us/R2-editions.aspx