If you are facing the task to move SCSM Data Warehouse Databases from one server to other server now you can find documentation on this here. Soon this document will be formatted and published in Technet Library.
Fix issue ‘The data warehouse registration failed’ for SCSM
Manoj Parvathaneni a Senior Support Escalation Engineer at Microsoft provides a simple solution to this problem at SCSM Team blog.
Microsoft Virtual Academy: What’s New in System Center 2012 and System Center 2012 Data Warehouse and Reporting
Moving the Service Manager and DW Databases
Travis Wright from System Center Service Manager team released an articles how to move Service Manager and Datawarehouse databases. If you are faced with such task click on the link below: