Seagate ST3500312CS ユーザーズマニュアル

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Pipeline HD.2 Series SATA Product Manual, Rev. E 
Table 1: 
Drive specifications summary
 for 1000GB models
Drive specification
ST31000424CS
ST31000322CS
Formatted Capacity
 
(512 bytes/sector)*
1000GB
Guaranteed sectors
1,953,525,168
Heads
4
Disks
2
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density (max.)
1417kb/in 
Track density (avg.)
236 ktracks/in
Areal density (avg.) 
341.5Gb/in
2
Spindle speed 
5900 RPM
Internal data transfer rate (max.)
1285Mb/s
Sustained data transfer rate (max.)
120MB/s
I/O data-transfer rate (max.)
300MB/s
ATA data-transfer modes supported
PIO modes: 0 to4
 
Multiword DMA modes: 0 to2
 
Ultra DMA modes: 0 to 6
Cache buffer  
16MB
8MB
Height (max.)
26.1mm / 1.028 in
Width (max.)
101.85mm / 4.010 in
Length (max.)
146.99mm / 5.787 in
Weight (typical)
615g / 1.356 lb
Average latency
5.1ms
Power-on to ready (typical)
<12s
Standby to ready (typical)
<12s
Track-to-track seek time (typical)
<1.0ms ( read)
 
<1.2ms ( write)
Average seek (typical)
<14.0ms read
<15.0ms write
Startup current 12V-peak (typical)
2.0A
Voltage tolerance (including noise)
5V ± 5%
 
12V ± 10%
Operating temperature
 
(drive case temperature)
0° to 75°C
Non-operating temperature (ambient)
–40° to 70°C
Temperature gradient (max.)
20°C per hour (operating)
 
30°C per hour (non-operating)
Relative humidity
5% to 90% (operating)
 
5% to 95% (non-operating)
Relative humidity gradient (max.)
30% per hour 
Wet bulb temperature (max.)
37.7°C  (operating)
 
40.0°C   (non-operating)
Altitude, operating
–60.96m to 3,048m
 
(–200 ft to 10,000+ ft)
Altitude, non-operating 
 
(below mean sea level, max.)
–60.96m to 12,192m
 
(–200 ft  to 40,000+ ft )