Seagate Barracuda 7200.10 PATA, Руководство по эксплуатации продукта

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6 Barracuda 7200.10 PATA Product Manual, Rev. A
Table 2: Drive specifications summary
for 400 and 320 Gbyte models
Drive specification ST3400820A ST3400620A ST3320820A ST3320620A
Formatted Gbytes (512 bytes/sector)* 400 320
Guaranteed sectors 781,422,768 625,142,448
Heads 5 4
Discs 3 2
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 781
Track density, KTPI (ktracks/in avg.) 145
Areal density, (Gbits/in
2
avg) 128.2 114.4
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbytes/sec max) 72
Sustained data transfer rate (Mbits/sec max) 1,030
I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Cache buffer 8 Mbytes 16 Mbytes 8 Mbytes 16 Mbytes
Height (mm max) 26.1 mm (1.028 inches)
Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches
Length (mm max) 146.99 mm (5.787 inches)
Weight 635 grams
Average latency 4.16 msec
Power-on to ready (max) 15 sec
Standby to ready (max) 15 sec
Track-to-track seek time (msec typical) <0.8 (read), <1.0 (write)
Average seek, read (msec typical) <11.0
Average seek, write (msec typical) <12.0
Startup current (typical) 12V (peak) 2.8 amps
Voltage tolerance (including noise) 5V ± 5%
12V ± 10%
Ambient temperature 0° to 60°C (operating)
–40° to 70°C (nonoperating)
Temperature gradient (°C per hour max) 20°C (operating)
30°C (nonoperating)
Relative humidity 5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 37.7 (operating)
37.7 (nonoperating)
Altitude, operating –60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
Altitude, nonoperating
(below mean sea level, max) –60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
Operational Shock (max at 2 msec) 68 Gs
Non-Operational Shock (Gs max at 2 msec) 300 Gs