HP LTO Ultrium cartridges meet all your demands for maximum reliability when restoring data, offering high storage density, ease of management and scalable storage and backup performance. From LTO-3 onwards, LTO Ultrium WORM cartridges enable the creation of compliant, permanent and tamperproof archives. From LTO-4 onwards, secure AES-256 encryption provides even higher levels of data security and compliance with the most stringent industry regulations to prevent unauthorized data access. From LTO-5 onwards, LTO Ultrium linear tape file system makes using tape as easy, flexible, portable and intuitive as using other removable and sharable media, such as a USB drive.