Editing Digital Linear Tape (section)

==History==
[[File:DEC-TK50-drive and cassette.jpg|thumb|upright=1.3|DEC TK50 drive and cartridge]]
[[File:Digital-compactape-ii hg.jpg|thumb|upright=.8|CompacTape II]]
[[File:Digital-compacttape hg.jpg|thumb|upright=.8|CompacTape III (DLT)]]
DEC launched the TK50 tape drive for the [[MicroVAX|MicroVAX II]] and [[PDP-11]] [[minicomputer]]s in 1984. This used 22-track CompacTape I cartridges, storing 94 MB per cartridge. The TK50 was superseded in 1987 by the TK70 drive and the 48-track CompacTape II cartridge, capable of storing 294 MB. In 1989, the CompacTape III (later DLTtape III) format was introduced, increasing the number of tracks to 128 and capacity to 2.6 GB. Later drives into the early 1990s improved the data density of the DLTtape III cartridge, up to 10 GB. The DLTtape IV cartridge was introduced by Quantum in 1994, with increased tape length and data density, initially offering 20 GB per tape. Super DLTtape, originally capable of up to 110 GB, was launched in 2001.