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".
|"S" Capacity (GB)||12||60|
|"L" Capacity (GB)||42||200|
|Max Speed (MB/s)||12||24|
- Both used ALDC compression
- DTF-2 used Fibre Channel or SCSI interfaces
- The tape cassettes are similar to those of Sony Betacam.
- ECMA 248 Specification of DTF-1. 
- ECMA 315 Specification of DTF-2. 
- Brochure for DTF-1 drive with specs
- DTF at the Computer Desktop Encyclopedia, including images