LTO Tape, Linear Tape-Open, is a magnetic tape data storage technology developed as an open alternative to the proprietary Digital Linear Tape (DLT tape). The LTO technology is also called "Ultrium" and is often used for network server back-up and archive situations. We offer LTO Ultium 1 LTO Ultrium 2, LTO Ultrium 3, and LTO Ultrium 4 tape by trusted brands including Sony, Maxell, Fujifilm, Imation, and more.