Quantum DAT 240 Loader Manual de usuario descargar pdf (Pagina 17)

Scorpion 240 Product Manual

Drive Performance Specifications

The following table lists the specifications for the Scorpion 240 autoloader and tape

drive.

Specification Value

Capacity (six-cartridge magazine;

2:1 data compression)

90 m MP

120 m MP+

125 m MP++

150 m MP+++

24.0 Gbytes

48.0 Gbytes

144.0 Gbytes

240.0 Gbytes

Flux density (DDS-4) 6,004 flux transitions per mm

Track density (DDS-4) 147.34 tracks per mm

Error recovery Read-after-write

Reed Solomon ECC (C3 - 3 levels)

Recording unrecoverable errors < 1 in 10

data bits

Tape drive type Computer grade 4DD mechanism

Head configuration 2 read heads, 2 write heads

Recording format DDS-4

Recording method Helical scan (R-DAT)

Cartridge 2.9 in × 2.1 in × 0.4 in

Transfer rate (sustained) 5.500 Kbytes per sec (DC ON)

Synchronous transfer rate (burst) 80 Mbytes per sec max

Asynchronous transfer rate (burst) 10 Mbytes per sec max

Search speed (max) 400x normal (3260 mm per sec)

Average access time

90 m cartridge

120 m cartridge

125 m cartridge

<30 sec

<40 sec

Drum rotation speed 10,000 RPM (all DDS modes)

Tape speed 20.375 mm per sec.

Head-to-tape speed 20.4 mm per sec.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 50 51

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Quantum DAT 240 Loader Manual de usuario Pagina 17