Travan
Generation TR-1 TR-3 TR-4 TR-5/NS20 TR-7
Release date 1995 1995 1997 1998 2002
Data capacity 400 MB 1.6 GB 4 GB 10 GB 20 GB
Max speed ( MB/s ) 0.25 0.5 1.2 2 4
Media format QIC-80 QIC-3020 QIC-3095 QIC-3220-MC Travan 640
Min tape length ( ft ) 750 750 740 740 750
Tape tracks 36 50 72 108 108
Encoding MFM MFM RLL ( 1,7 ) RLL ( 1,7 ) VR ( PRML )
Tape type Co-γFe 2 O 3 Co-γFe 2 O 3 Co-γFe 2 O 3 Metal Particle Metal Particle
Coercivity ( Oe ) 550 900 900 1650 1650
Recording density ( ftpi ) 14,700 44,250 50,800 79,800 96,000
Data density ( bpi ) 14,700 44,250 67,733 106,400 192,000
Generations
Travan is an 8 mm magnetic tape cartridge design developed by the 3M company, used for the storage of data in computer backups and mass storage. Over time, subsequent versions of Travan cartridges and drives have been developed that provide greater data capacity, while retaining the standard 8 mm width and 750' length. Travan is standardized under the QIC body. HP Colorado, Iomega DittoMax and AIWA Bolt are proprietary versions of the Travan format. The Travan format competes mainly against the DDS, AIT, and VXA formats.