Digital Tape Format
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
| class="wikitable" style="margin-left: 1em;" | |
| 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
- [http://www.ecma-international.org/publications/standards/Ecma-248.htm ECMA 248] Specification of DTF-1. [http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-248.pdf]
- [http://www.ecma-international.org/publications/standards/Ecma-315.htm ECMA 315] Specification of DTF-2. [http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-315.pdf]
- [https://web.archive.org/web/20030325160342/http://bssc.sel.sony.com/Professional/docs/brochures/gy2120_finalrev.pdf#search=%22DTF%20tape%20site%3Asony.com%22 Brochure for DTF-1 drive with specs]
- [https://web.archive.org/web/20160117173532/http://lookup.computerlanguage.com/host_app/search?cid=C000401&def=647466.htm DTF at the Computer Desktop Encyclopedia, including images]
{{Magnetic tape data formats}}
Category:Computer storage tape media
{{compu-storage-stub}}
References
{{Reflist}}