Moving SharePoint DB's to a different SQL server

Hi All,

I am planning to change our DB server due to hardware issue(not able to resolve). Our environment is SharePoint 2010 with two DB servers (Active & Passive). I want to place new DB servers and restore all the DB's from production environment and do the test. How to achieve this task. Pls guide me. Main thing is how to map the existing search & user profile service applications DB with SharePoint.

Thanks & Regards,
Sankar