Besides a few things in iTunes, the only material I have on drives is/are my masters. This adds up when you save transfers of all the individual tracks from 2, 3, 4, 8, 16 and 24 track tapes. All the various permutations of mixes and edits are saved in 24 bit. Have not checked the bit count but... And I have one drive at home and another at Delmark where I do most of my work.