Seagate ST31000340NS Product Manual page 12

Drive specifications summary
Table 2:
Drive specification
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
Heads
Discs
Bytes per sector
Default sectors per track
Default read/write heads
Default cylinders
Recording density, KBPI (kbits/in max)
Track density, KTPI (ktracks/in avg.)
2
Areal density, (Gbits/in avg)
Spindle speed (RPM)
Internal data transfer rate (Mbits/sec max)
Sustained data transfer rate OD (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
ATA data-transfer modes supported
Cache buffer
Height (mm max)
Width (mm max)
Length (mm max)
Weight (max)
Average latency
Power-on to ready (sec max)
Standby to ready (sec max)
Track-to-track seek time (msec typical)
Average seek, read (msec typical)
Average seek, write (msec typical)
Startup current (typical) 12V (peak)
Voltage tolerance (including noise)
Ambient temperature
Temperature gradient (°C per hour max)
Relative humidity
Relative humidity gradient
Wet bulb temperature (°C max)
Altitude, operating
Altitude, nonoperating
(below mean sea level, max)
Operational Shock (max at 2 msec)
Non-Operational Shock (max at 2 msec)
6
for 500 GB and 250 GB models
ST3500320NS
500
976,773,168
4
2
512
63
16
16,383
1,090
150
164
7,200
1287
105
300
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
32 Mbytes
26.1 mm (1.028 inches)
101.6 mm (4.000 inches) +/- 0.010 inches
146.99 mm (5.787 inches)
530 grams (1.168 lbs)
4.16 msec
20 sec
8 sec
0.8 read; 1.0 write
8.5
9.5
2.8 amps
5V + 10% / -7.5%
12V + 10% / -7.5%
5° to 55°C (operating)
–40° to 70°C (nonoperating)
20°C (operating)
30°C (nonoperating)
5% to 95% (operating)
5% to 95% (nonoperating)
30% per hour max
37.7 (operating)
40.0 (nonoperating)
–60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
70 Gs
300 Gs
Barracuda ES.2 Serial ATA Product Manual, Rev. A
ST3250310NS
250
488,397,168
2
1
495 grams (1.091 lbs)