BE 2012 not Compressing Data

I have just uograded my BE from 2010 to 2012. before the uograde, i used 2 tapes for both my daily incremental and weekly full backup. but i noticed after the upgrade, my users data alone takes about 3 taped alone to run a full weekly backup. my compression configuratio didnt change from what it was when i was running BE2010 which "Hardware( if available, otherwise software). can someone assist me cos nothing has change and i sincerely diont know what is it that i'm doing that isnt right. I  am using LTO2 tape drive by the way.