Magnetic-tape data storage formats

Linear

Wide (19–25.4 mm)	IBM 7340 (1961) LINCtape (1962) DECtape (1963) CDC 626 (1966)
Half inch (12.7 mm)	UNISERVO (1951) IBM 7-track (1952) TX-2 Tape System (1958) 9-track (1964) IBM 3480 (1984) DLT (1984) IBM 3590 (1995) T9840 (1998) T9940 (2000) LTO Ultrium (2000) IBM 3592 (2003) T10000 (2006)
Eight millimeter (8 mm)	Travan (1995) IBM 3570 MP (1997) ADR (1999)
Quarter inch (6.35 mm)	QIC (1972) SLR (1986) Ditto (1992)
"Eighth" (0.15) inch (3.81 mm)	D/CAS (1971) KC standard, Compact Cassette (1975) DC100 (1976) Tarbell Cassette Interface (1976) Commodore Datasette (1977) DECtape II (1979) IBM PC Cassette (1981)
Stringy (1.58–1.9 mm)	Exatron Stringy Floppy (1979) ZX Microdrive (1983) QL Microdrive (1984) Rotronics Wafadrive (1984)

Helical

Three quarter inch (19 mm)	Sony DIR (19xx) Ampex DST (1992)
Half inch (12.7 mm)	ArVid (1992) Redwood SD-3 (1995) DTF (19xx) SAIT (2003)
Eight millimeter (8 mm)	Data8 (1987) Mammoth (1994) AIT (1996) VXA (1999)
Four millimeter (3.81 mm)	DDS/DAT (1989)

Category