Database backup tapes taking over

[Dennis Melburn W IT743]

I have noticed that ever since I started using the DRM, alot of my TSM
servers have been steadily decreasing in scratch tapes by alot.  My
servers are scheduled to run a Full Database backup once per day, with a
a Database Snapshot once per week.  The full database copies stay on
site, while the snapshot gets sent off site weekly.  I have the database
expire variable in the DRM set to 14 days.  The question I have is why
do all my sites have like 40-60 database tapes, when there should only
be 14.  Am I doing something wrong?
 
 
 Mel Dennis