Backing up SQL Express DB for DS6.9 SP6

Anyone know which DB files and the location of the files using DS6.9 SP6 need to be backed up for SQL DB restoring purposes?

I am running DS6.9 SP6 on Server 2012, SQL Express 2012. I usually just backup the DB files manually with SQL shutdown, but it appears the locations have changed under the newer versions of SQL/SQLExpress.

Thank You,

Sean