Seagate Barracuda 7200.9 ST3120211AS, Руководство по эксплуатации продукта

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8 Barracuda 7200.9 Serial ATA Product Manual, Rev. A
Table 3:
Drive specifications summary
for 80 and 40 Gbyte models
Drive specification ST380811AS ST380211AS ST340211AS
Formatted Gbytes (512 bytes/sector)* 80 40
Heads 1
Discs 1
Guaranteed sectors 156,301,488 78,165,360
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 756.09
Track density, KTPI (ktracks/in avg.) 141.95
Areal density, (Gbits/in
2
avg) 103.8
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 867.2
Sustained data transfer rate OD (Mbytes/sec max) 80
I/O data-transfer rate (Mbytes/sec max) 300
ATA data-transfer modes supported PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer 8 Mbytes 2 Mbytes
Height (max) 19.9 mm (0.787 inches)
Width (max) 101.6 mm (4.000 inches) +/- 0.010 inches
Length (max) 146.99 mm (5.787 inches)
Weight (max) 365 grams (0.805 lb.)
Average latency (msec) 4.16
Power-on to ready (sec max) <10.0 sec
Standby to ready (sec max) <10.0 sec
Track-to-track seek time (msec typical) <0.8 (read), <1.0 (write)
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)
40.0 (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 (Gs max at 2 msec) 63
Non-Operational Shock (Gs max at 2 msec) 350 Gs
Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.5 Gs
350–500 Hz:: 0.25 Gs