Link: Migrate Server Roles to Windows Server 2008 R2 [1]
Migration documentation and tools ease the process of migrating server roles, operating system settings, and data from an existing server that is running Windows Server® 2003, Windows Server® 2008, or Windows Server® 2008 R2 to a computer that is running Windows Server 2008 R2.
By using migration guides linked to on this page (and where appropriate, Windows Server Migration Tools) to migrate roles, you can simplify deployment of new servers (including those that are running the Server Core installation option of Windows Server 2008 R2, and virtual servers), reduce migration downtime, increase accuracy of the migration process, and help eliminate conflicts that could otherwise occur during the migration process.
Most of the migration documentation and tools featured on this page support cross-architecture migrations (x86-based to x64-based computing platforms), migrations between physical and virtual environments, and migrations between both the full and Server Core installation options of the Windows Server operating system, where available.