Digital Tape Format

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Digital Tape Format is a magnetic tape data storage format developed by Sony. It uses a 1/2" wide tape, in a cassette with two reels, which is written and read with a helical scan process. The format is described by the ECMA 248 (adopted June 1998) and ISO/IEC 15731 standards.

1 Generations
- 1.1 DTF-1
- 1.2 DTF-2
2 External links

[edit] Generations

[edit] DTF-1

42 GB capacity
12 MB/s transfer speed
ALDC compression

[edit] DTF-2

Introduced in 1999
200 GB capacity
24 MB/s transfer speed
Fibre Channel or SCSI interfaces

The tape cassette is similar to that of Sony Betamax.

[edit] External links

ECMA 248 Specification of DTF-1. [1]
ECMA 315 Specification of DTF-2. [2]
Brochure for DTF-1 drive with specs
DTF at the Computer Desktop Encyclopedia, including images

view • talk • edit	Magnetic tape data storage formats
	Linear	Helical-Scan
Three Quarter Inch (~19 mm)	LINCtape (1962) - DECtape (1963)	Sony DIR (19xx) - Ampex DST (1992)
Half Inch (12.65 mm)	UNISERVO (1951) - IBM 7 Track (1952) - IBM 9 Track (1964) - IBM 3480 (1984) - DLT (1984) - IBM 3590 (1995) - T9840 (1998) - T9940 (2000) - LTO Ultrium (2000) - T10000 (2006)	Redwood SD-3 (1995) - DTF (19xx) - SAIT (2003)
Eight Millimeter (8 mm)	Travan (1995) - IBM 3570 MP (1997)	Exabyte (1987) - Mammoth (1994) - AIT (1996) - VXA (1999)
Quarter Inch (6.35 mm)	QIC (1972) - SLR (1986)
Four Millimeter (3.8 mm)	DC100 (1976) - DECtapeII (1979)	DDS/DAT (1989)
One Eighth Inch (3.18 mm)	KC Standard, Compact Cassette (1975) - Datassette (1977)
Stringy (1.58 - 1.9 mm)	Exatron Stringy Floppy (1979) - ZX Microdrive (1983) - Rotronics Wafadrive (1984)