Seagate ST3750630AS ユーザーズマニュアル
4
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
Table 1:
Drive specifications summary
for 1000 and 750 Gbyte models
Drive specification
ST31000340AS
ST31000640AS
ST3750330AS
ST3750630AS
Formatted capacity (512 bytes/sector)*
1000 Gbytes
750 Gbytes
Guaranteed sectors
1,953,525,168
1,465,149,168
Heads
8
6
Discs
4
3
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density
1090 kbits/in max
Track density
150 ktracks/in avg
Areal density
164 Gbits/in
2
avg
Spindle speed
7,200 RPM
Internal data transfer rate
1287 Mbits/sec max
Sustained data transfer rate OD
105 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
16 Mbytes
32 Mbytes
16 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)
677 grams ( 1.493 lb.)
633 grams ( 1.396 lb.)
Average latency
4.16 msec
Power-on to ready
20 sec max
Standby to ready
15 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)
3.0 amps
Voltage tolerance (including noise)
5V +10% / -7.5%
12V +10% / -7.5%
Ambient temperature
0° to 60°C per hour max (operating)
–40° to 70°C per hour max (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
–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
63 Gs max at 2 msec
Non-Operational Shock
300 Gs max at 2 msec