Up to 15 TB of compressed data or 6 TB of uncompressed data can be stored. The Quantum LTO Ultrium tape can be inserted multiple times. For over a decade, LTO has proven to be an effective method for retaining and securing critical business data in the most demanding enterprise environments. Thanks to its affordable and open format, LTO technology has established itself as the de facto standard for tape with over 280 million LTO cartridges and more than 5 million drives delivered.