This Techworld document tabulates details of Sony's DTF and Super AIT tape formats and includes road map details where available. These are both enterprise tape market products, the former for the broadcast market where it is available in standalone drives and high capacity Petasite libraries.

Super AIT is the mid-range and enterprise-level format created by implementing AIT helical scan technology on a half-inch tape. The capacities are dramatically higher due to the greater surface area available.

Both are half-inch helical scan formats and DTF may remain as a broadcast market tape with Super AIT being the mid-range and general enterprise format.

DTF
DTF stands for Digital Tape Format.












































DTF 1 DTF 2 DTF 3 DTF 4
Raw Capacity 42GB 200GB 500GB 1TB
Compressed Capacity 108GB 518GB 1.295TB 2.59TB
Raw Transfer Rate c12MB/sec 24MB/sec 50MB/sec 100MB/sec
Compressed Transfer Rate 31MB/sec 62MB/sec 129MB/sec 259MB/sec
Date available 1998 2002 2004? 2006?

DTF has a quoted 2.59:1 compression ratio. The DTF 3 and DTF 4 values are speculative.

Super AIT
This Super Advanced Intelligent Tape format uses a longer and wider tape ribbon than the 8mm tape used for the AIT formats. It is a 12.7mm or half inch format which means that the drives can fit in the same size bays as other half inch tape formats. This means that Super AIT tape can be used in multi-format libraries using half-inch formats such as LTO and SDLT.




































SAIT 1 SAIT 2 SAIT 3 SAIT 4
Raw Capacity 500GB 1TB 2TB 4TB
Compressed Capacity 1.295TB 2.59TB 5.18B 10.36TB
Raw Transfer Rate 30MB/sec 60M/sec 120MB/sec 240MB/sec
Compressed Transfer Rate 77.7MB/sec 155.4MB/sec 310.8MB/sec 621.6MB/sec

SAIT 1 is current. SAIT 2, 3 and 4 can be expected in 2004, 2006 and 2008 respectively. All values for SAIT 2, 3 and 4 are speculative.