I have a exabyte tape library (1 X 12). The 12 slots are partioned the following way
Partition 0: slot 0 (Empty)
Partition 1: slot 1 (Empty)
Partition 2: slots 2,3,4,5
Partition 3: slots 6,7,8,9
Partition 4: slot :10
partition 5: slot 11
I use 400 ...