Link to VHD of Windows Server 2003 R2 from Microsoft Downloads.
This download helps you evaluate the new features of Windows Server 2003 R2, the most productive infrastructure platform for powering connected applications, networks, and Web services from the workgroup to the data center. Windows Server 2003 R2 simplifies branch server management, improves identity and access management, reduces storage management costs, provides a rich Web platform. For more information about Windows Server 2003 R2.