Hi All, I have a single tier hierarchy with WSUS running for SUP role. Kindly let me know does I have to take separate backup of WSUS DB, other then SCCM DB

Hi, Backup process for Configuration Manager doesn't touch the WSUS database. You'd have to back up WSUS manually. See details in this article: Backing Up Windows Server Update Services http://technet.microsoft.com/en-us/library/cc708546%28WS.10%29.aspx