NEC POWERMATE ENTERPRISE - 09-1997, Руководство по обслуживанию

Страница: 9 / 33

Specifications 1-5
Table 1-4 6.4-GB Quantum Stratus Hard Disk Drive Specifications
Feature Specification
Hard Disk Drive 6.4-GB Quantum Fireball ST
Physical Configuration
Formatted Capacity
Nominal rotational speed
Number of Disks
Number of R/W Heads 6448
5,400 rpm
4
8
Data Organization Zones per surface: 15
Tracks per surface: 7,066
Total tracks: 56,528
Sectors per Track Inside zone: 154
Outside zone: 277
Total User Sectors: 12,594,960
Bytes per Sector: 512
Number of tracks per cylinder: 8
Recording Recording technology: Multiple Zone
Maximum linear density: 168,650 fci
Encoding method: 16/17 PRML
Interleave: 1:1
Track density: 7,777 tpi
Maximum effective areal density: 1230 Mbits/in
2
Performance Seek times
Read-on-arrival: 10.0 ms typical; 12.0 ms max.
Track-to-track: 2.0 ms typical
Average write: 11.0 ms typical; 13.0 ms max.
Full Stroke: 20.0 ms typical; 24.0 ms max.
Data transfer rate
Disk to read buffer: 78 Mb/sec. min; 132 Mb/sec. max
Read Buffer to IDE Bus (PIO Mode with IORDY):
16.7 MB/sec. max.
Read Buffer to IDE Bus (Ultra ATA Mode):
33 Mb/sec. max.
Buffer Size 128 KB
Power +5V +/-5%; 100 mV peak-to-peak allowable ripple/noise
12V +/-10%; 250 mV peak-to-peak allowable ripple/noise
Temperature (non-condensing)
Operating: 5
°
to 55
°
C (41
°
to 131
°
F)
Non-operating: -40
°
to 65
°
C (-40
°
to 149
°
F)
Humidity (non-condensing)
Operating: 5% to 85% rh, 30
°
C (86
°
F)
Non-operating: 5% to 95% rh, 40
°
C (104
°
F)
Altitude Operating: -200 m to 3,000 m (-650 to 10,000 ft.)
Non-operating: -200 m to 12,000 m (-650 to 40,000 ft.)
Dimensions Height:1.0 inches (25.4 mm)
Width: 4.0 inches (101.6 mm)
Depth: 5.75 inches (146.1 mm)