HP HEWC7974A LTO Ultrium 4 Tape Cartridge Features active internal head cleaning, self-diagnostic capacities, cartridge memory and superior reliability Holds 896 data tracks with a capacity of up to 1.6TB on one tape (compressed); native AES-256 bit key encryption Lasts up to 1 million passes which is equal to more than 20,000 end-to-end passes or 260 full tape backups