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 |
199? |
1999 |
| "S" Capacity (GB) |
12 |
42 |
| "L" Capacity (GB) |
60 |
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
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Magnetic tape data storage formats |
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| Linear |
| Three quarter inch (19 mm) |
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| Half inch (12.65 mm) |
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| Eight millimeter (8 mm) |
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| Quarter inch (6.35 mm) |
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| Eighth inch (3.81 mm) |
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| Stringy (1.58–1.9 mm) |
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| Helical |
| Three quarter inch (19 mm) |
Sony DIR (19xx) · Ampex DST (1992)
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| Half inch (12.65 mm) |
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| Eight millimeter (8 mm) |
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| Eighth inch (3.81 mm) |
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