With unbroken market leadership stretching back more than six years (according to Santa Clara Consulting Group) HP is the most popular LTO Ultrium media in the world. That's because HP tapes offer outstanding quality and reliability for every tape drive and every backup and archiving scenario. In 2011, HP carried out over 2.6 million hours of testing, covering all aspects of tape usage; from full volume backups and archiving to rigorous environmental interchange tests. Backed by this uncompromising media qualification process, HP Ultrium data cartridges support all HP StoreEver Ultrium and non HP Ultrium tape devices. Assuming 2.5:1 compression, the latest sixth Generation products minimize interruption to network and SAN backup by being capable of protecting 1.45TB/hour of data and storing up to 6.25 TB on one piece of media (290% greater capacity than HP LTO-4 Ultrium tapes).