NEC POWERMATE 8100 Series, Инструкция по обслуживанию и справочник

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Specifications 10-13
Tape Backup Unit Specifications
The specifications for the tape backup unit are included in the following table.
Tape Backup Unit Specifications
Feature Specification
Tape Backup Unit Seagate CTT8000 IDE Minicartridge Drive
Capacity 4.0 GB (900 Oe 740’ Travan cartridge, uncompressed)
8.0 GB (900 Oe 740’ Travan cartridge, compressed)
Effective Backup Rate 30 MB/min typical native
45 MB/min typical compressed
Data Transfer Rate 300/450/600 KB/second Fast Sense
Tape Speed
Read/Write
Search/Rewind
33, 51, or 77 ips
90 ips max
Recording Method Serpentine
Recording Format QIC-3095-MC
Recording Code 1,7 RLL
Error Recovery Reed Solomon ECC
Head Configuration Wide write/narrow read
Recording Media 900 Oe 740’ Travan TR-4
Cartridge Size 3.2 in. x 2.4 in. x 0.4 in. (81 mm x 61 mm)
Data Density 67,733 bpi
Tracks 72 data tracks, one directory track
Synchronous Transfer Rate (Burst) 5 MBytes/sec maximum
Asynchronous Transfer Rate (Burst) 5 MBytes/sec maximum
Voltage Tolerance +5V +/-5%; +12V +/-10%
Temperature
Operating: 5
°
to 45
°
Non-operating: -40
°
to 65
°
Humidity Operating: 20% to 80% (non-condensing)
Non-operating: 5% to 95% (non-condensing)
Altitude Operating: -1,000 to 15,000 feet
Non-operating: -1,000 to 50,000 feet