Digital Linear Tape (DLT; previously called CompacTape) is a magnetic-tape data storage technology developed by Digital Equipment Corporation (DEC) from 1984 onwards. In 1994, the technology was purchased by Quantum Corporation, who manufactured drives and licensed the technology and trademark. A variant with higher capacity is called Super DLT (SDLT). The lower cost "value line" was initially manufactured by Benchmark Storage Innovations under license from Quantum. Quantum acquired Benchmark in 2002.
A Super DLT I tape cartridge
DEC TK50 drive and cassette
CompacTape II
CompacTape III (DLT)
Magnetic-tape data storage
Magnetic-tape data storage is a system for storing digital information on magnetic tape using digital recording.
10+1⁄2-inch (270 mm) diameter reel of 9-track tape
Quarter-inch cartridges
An IBM 3590 data cartridge can hold up to 10GiB uncompressed.
IBM 729V