The LTO (Linear Tape Open) Ultrium format is the high-capacity, single-reel implementation of LTO technology. It is ideally suited for backup, restore and archive applications and provides reliability in both stand-alone and automated environments. The Ultrium format is the preferred format when capacity rather than fast access is the key storage consideration. An Ultrium format generation 3 cartridge has a capacity of up to 800 GB (2:1 compression) and up to 400 GB native, while the Ultrium format generation 2 has a capacity of up to 400 GB (2:1 compression) and up to 200 GB native. Capacity for LTO Ultrium generation 1 format cartridges reaches up to 200 GB (2:1 compression) and up to 100 GB native. [Source: LTO technology Web site].
Note: Capacity measurements based on technology available as of August 2005. The capacity may increase as the technology matures.
See also LTO.