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Data8

The 8 mm backup format is a discontinued magnetic tape data storage format used in computer systems, pioneered by Exabyte Corporation. It is also known as Data8, often abbreviated to D8 and is written as D-Eight on some Sony branded media. Such systems can back up up to 60 GB of data depending on configuration. The cassettes have the same dimensions and construction as the cassettes used in 8 mm video format recorders and camcorders.

Generations
NOTE: The AIT and VXA formats and some other less common formats also use 8 mm wide tape, but are completely incompatible. Compatibility between tapes and drives and native capacities (GB) Legend: • RO - The tape drive can read this tape, but not write. (Read Only) • Y - The tape drive can read and write this tape, but its size is not known. • Numbered entries indicate the native storage capacity (in GB) for this combination of tape and drive. Exabyte 8 mm These drives use metal particle (MP) tape. • 1987—EXB-8200 • Full-height form factor • 246 kB/s data transfer rate • EXB-8200SX model features high-speed search • EXB-8205: Up to 5.0 GB on one 112 m data cartridge (assuming 2:1 compression ratio) • EXB-8205XL: Up to 7.0 GB on one 160 m data cartridge (assuming 2:1 compression ratio) • 1990—EXB-8500 • Full-height form factor • 500 kB/s data transfer rate • EXB-8500c model features hardware data compression • 1992—EXB-8505 • Half-height form factor • 500 kB/s data transfer rate (uncompressed) / 1.0 MB/s data transfer rate (assuming a 2:1 compression ratio) • Up to 10.0 GB on one 112 m data cartridge (assuming 2:1 compression ratio) • 1994—EXB-8505XL • Half-height form factor • 500 kB/s data transfer rate (uncompressed) / 1.0 MB/s data transfer rate (assuming a 2:1 compression ratio) • Up to 14.0 GB on one 160 m XL data cartridge (assuming 2:1 compression ratio) • 1995—EXB-8700 • Tabletop (top-loading) form factor • 8700 model included generic backup software • 8700LT model included no software • 8700SW included Cheyenne backup software • 1998—Eliant 820 • Half-height form factor Mammoth These drives use Advanced Metal Evaporated (AME) tape, but could also read (but not write) MP tapes. • 1996—EXB-8900 Mammoth • 3 MB/s data transfer rate • LCD on drive displayed drive status • 1999—Mammoth-LT • No LCD Mammoth-2 (M2) These drives used Advanced Metal Evaporated (AME) tape with a 2 m integrated cleaning tape header called Smart Clean. • 1999—Mammoth-2 • 12 MB/s data transfer rate • 4.6 cm/s tape speed during normal read/write operations • 1.6 m/s tape speed during search and rewind operations • 17 s load time, from insertion to ready • ALDC hardware data compression, 1 kB compression buffer == See also ==
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