We have a 3570 tape drive for our as400. The cartridges are 05H2462. I've been getting a message that I either have the wrong tape or it was initialized incorrectly. This has happened with several tapes, so I'm thinking I may be initializing incorrectly. For tape density I've been using *DEVTYPE. I'm going to experiment with the other options, but hoping someone knows what the correct tape density is. I've tried calling IBM and I'm googling, but haven't found the answer yet.