Microsoft Dynamics CRM 2011 is not supported on SQL Server that is running on Windows 2000 Server, and also not supported for Windows 2003/R2 and Windows 2008/R2 32 bit.
If the installation is done in a SQL Server 2008 on a Windows 2008r2 Server, and then if we move CRM databases to another server with SQL Server 2008 in Windows 2003r2, this is also not supported.
The recent version of SQL Server 2012 is also supported for the Dynamics CRM 2011.