Seagate BARRACUDA ST31000520AS Product Manual page 12

Drive specifications summary
Table 2:
Drive specification
Formatted capacity
(512 bytes/sector)*
Guaranteed sectors
Heads
Discs
Bytes per sector
Default sectors per track
Default read/write heads
Default cylinders
Recording density
Track density
Areal density
Spindle speed
Internal data transfer rate
Sustained data transfer rate OD
I/O data-transfer rate
ATA data-transfer modes supported
Cache buffer
Height (max)
Width (max)
Length (max)
Weight (typical)
Average latency
Power-on to ready
Standby to ready
Track-to-track seek time
Average read
Average write
Startup current (typical) 12V (peak)
Voltage tolerance (including noise)
Operating temperature
(Drive Case temperature)
Nonoperating temperature (Ambient)
Temperature gradient (max)
Relative humidity
Relative humidity gradient
Wet bulb temperature (max)
Altitude, operating
Altitude, nonoperating
(below mean sea level, max)
6
for 1000 and 500 Gbyte models
ST31000520AS
500 Gbytes
1,953,525,168
4
2
512
63
16
16,383
1417 kbits/in max
236 ktracks/in avg
2
341.5 Gbits/in avg
5,900 RPM
1285 Mbits/sec max
95 Mbytes/sec max
300 Mbytes/sec max
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
32 Mbytes
26.1 mm (1.028 inches)
101.85 mm (4.010 inches)
146.99 mm (5.787 inches)
622 grams (1.371 lb.)
5.1 msec
<12 sec typical
<6 sec typical
<1.0 msec typical read;
<1.2 msec typical write
<16.0 msec typical
<16.0 msec typical
2.0 amps
5V ± 5%
12V ± 10%
0° to 60°C
–40° to 70°C
20°C per hour max (operating)
30°C per hour max (nonoperating)
5% to 90% (operating)
5% to 95% (nonoperating)
30% per hour max
37.7°C max (operating)
40.0°C max (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.)
Barracuda LP Series SATA Product Manual, Rev. B
ST3500412AS
500 Gbytes
976,773,168
2
1
16 Mbytes
20.20 mm (0.795 inches)
415 grams (0.915 lb.)
<6 sec typical