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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. There are two sizes of tape cassettes, "S" and "L".

Generations

Generation DTF-1 DTF-2
Release Date 1994 1999
"S" Capacity (GB) 12 60
"L" Capacity (GB) 42 200
Max Speed (MB/s) 12 24

Notes:

  • Both used ALDC compression
  • DTF-2 used Fibre Channel or SCSI interfaces
  • The tape cassettes are similar to those of Sony Betacam.

External links

Magnetic-tape data storage formats
Linear
Wide (19–25.4 mm)
Half inch (12.7 mm)
Eight millimeter (8 mm)
Quarter inch (6.35 mm)
"Eighth" (0.15) inch (3.81 mm)
Stringy (1.58–1.9 mm)
Helical
Three quarter inch (19 mm)
  • Sony DIR (19xx)
  • Ampex DST (1992)
Half inch (12.7 mm)
Eight millimeter (8 mm)
Four millimeter (3.81 mm)


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