My 3494 is filled with 3590E carts.  If I were to use 3590K carts, my robot
wouldn't be so filled.  This is the current definition of the DEVC TAPE:

      Device Class Name: TAPE
 Device Access Strategy: Sequential
     Storage Pool Count: 8
            Device Type: 3590
                 Format: DRIVE
  Est/Max Capacity (MB):
            Mount Limit: 7
       Mount Wait (min): 60
  Mount Retention (min): 2

If I were to start introducing the longer format carts into my system,
would TSM use them interchangeably with the old ones, i.e., would
reclamation write 2 Es on a K and 1/2 a K on an E, or would I have to have
two separate device classes?

TIA