6.25TB compressed?
Who the F! cares about the 'compressed capacity'?
I have to back up a large library of pictures(creeping towards 10TB), and I challenge anyone to get a 2:1 compression(or whatever imaginary ratio that the storage manufacturer has dreamt up while smoking his socks) on that...
I NEED to know the real capacity when planning a new tape library setup, so that I can get a big enough robot and also have enough tapes available for vaulting/offsite rotation.