Seagate ST3500418AS ユーザーズマニュアル

ページ / 48
4
Barracuda 7200.12 Serial ATA Product Manual, Rev.  B
Table 1: 
Drive specifications summary
 for 1000 and 750 Gbyte models
Drive specification
ST31000528AS
ST3750528AS
Formatted capacity (512 bytes/sector)*
1000 Gbytes
750 Gbytes
Guaranteed sectors
1,953,525,168
1,465,149,168
Heads
4
3
Discs
2
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density
1413 kbits/in max
Track density
236 ktracks/in avg
Areal density
329 Gbits/in
avg
Spindle speed
7,200 RPM
Internal data transfer rate
1695 Mbits/sec max
Sustained data transfer rate OD
125 Mbytes/sec max
I/O data-transfer rate
300 Mbytes/sec max
ATA data-transfer modes supported
PIO modes 0–4
 
Multiword DMA modes 0–2
 
Ultra DMA modes 0–6
Cache buffer
32 Mbytes
Height (max)
26.1 mm (1.028 inches)
Width (max)
101.6 mm (4.000 inches) +/- 0.010 inches
Length (max)
146.99 mm (5.787 inches)
Weight (typical)
622 grams (1.371 lb.)
Average latency
4.16 msec
Power-on to ready
<10.0 sec max
Standby to ready
<10.0 sec max
Track-to-track seek time
<1.0 msec typical read;
 
<1.2 msec typical write
Average seek, read
<8.5 msec typical
Average seek, write
<9.5 msec typical
Startup current (typical) 12V (peak)
2.0 amps
Voltage tolerance (including noise)
5V +10% / -7.5%
 
12V +10% / -7.5%
Ambient temperature
0° to 60°C (operating)
 
–40° to 70°C (nonoperating)
Temperature gradient
20°C per hour max (operating)
 
30°C per hour max (nonoperating)
Relative humidity
5% to 95% (operating)
 
5% to 95% (nonoperating)
Relative humidity gradient
30% per hour max
Wet bulb temperature
37.7°C max (operating)
 
40.0°C max (nonoperating)
Altitude, operating
–304.8 m to 3,048 m
 
(–1000 ft. to 10,000+ ft.)
Altitude, nonoperating 
 
(below mean sea level, max)
–304.8 m to 12,192 m
 
(–1000 ft. to 40,000+ ft.)
Operational Shock
70 Gs max at 2 msec
Non-Operational Shock
300 Gs max at 2 msec