We have just created a new Windows Server 2012 with TFS 2012 using a SQL Server 2012 db. I need to migrate the code with history from a TFS 2010 using SQL Server 2008 RS to this new server. Any suggestions?
See Stack Overflow question there. It links to the MSDN page with walkthroughs. If you have questions during the migration or about the migration I would suggest asking over at SO as they would have more experience.