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

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

• 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

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