File Server Resource Manager - Audit file screen, database?

Hi, I am planning to implement FSRM on a Win2008 R2 server.
The goal is to log all files that are added to a special folder.

Standard File auditing is not an option, as the backup software creates extremely large logs when I enable standard audit.

So my plan was to add the FSRM role, create a file screen Group With *.*, and the let FSRM log this to the event log.
In order for this to work, there is an option in FSRM: "Record file screening Activity in the auditing database".

I wonder what kind of DB this is. Is it a flat file located under C:\ ? Does it support SQL server?

My goal is to have non-technical users to be able to read the file creation activity in the Event log.

Thanks!