Windows 2008 R2 Support

Before upgrading your operating systems to Windows 2008 R2 you have to know which versions of products are supported on this platform.

1. SQL Server
   1. SQL Server 2005 Service Pack 3 and later
   2. SQL Server 2008 Service Pack 1 and later
   3. SQL Server 2005 Express Edition Service Pack 2
   4. SQL Server 2008 Express RTM
   5. SQL Server 2008 R2 will be supported in H1 2010
2. Exchange
   1. Exchange 2010 and later version will be supported Q4 2009
3. Office Servers
   1. Forms Server 2007 Service Pack 2 and later
   2. Groove Server 2007 Service Pack 2 and later
   3. PerformancePoint Server 2007 Service Pack 2 and later will be supported Q1 2010
   4. Project Server 2007 Service Pack 2 and later
   5. SharePoint Server 2007 Service Pack 2 and later              
   6. Search Server 2008 Service Pack 2 and later
   7. Search Server 2008 Express Service Pack 2 and later

for a complete lit of supported products see Microsoft Server Applications Supported on Windows Server 2008 R2