The IBM 3592 JY WORM data cartridge 46X7454 with 4 TB is a WORM (Write- Once-Read-Many) cartridge with encryption and the ability to monitor the life of the cartridge in conjunction with the tape drive. These features work together to ensure that stored data is protected from loss or corruption. The IBM 3592 JY 4 TB WORM cartridge has a... native capacity of up to 4 TB.