Seagate Barracuda 7200.10 ST3250820AS 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 seek, read
Average seek, write
Startup current (typical) 12V (peak)
Voltage tolerance (including noise)
Ambient temperature
Temperature gradient (max)
Relative humidity
Relative humidity gradient
Wet bulb temperature (max)
Altitude, operating
Altitude, nonoperating
(below mean sea level, max)
Operational Shock
Non-Operational Shock
6
for 500 Gbyte models
ST3500630AS
500 Gbytes
976,773,168
6
3
512
63
16
16,383
813 kbits/in max
145 ktracks/in avg
2
114.4 Gbits/in avg
7,200 RPM
1,030 Mbits/sec max
72 Mbytes/sec max
300 Mbytes/sec max
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
16 Mbytes
26.1 mm (1.028 inches)
101.6 mm (4.000 inches) +/- 0.010 inches
146.99 mm (5.787 inches)
635 grams (1.40 lbs)
4.16 msec
15 sec max
15 sec max
<0.8 msec typical read; <1.0 msec typical write
<8.5 msec typical
<10.0 msec typical
2.8 amps
5V ± 5%
12V ± 10%
0° to 60°C (operating)
–40° to 70°C (nonoperating)
20°C per hour (operating)
30°C per hour (nonoperating)
5% to 90% (operating)
5% to 95% (nonoperating)
30% per hour max
37.7 °C (operating)
37.7 °C (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.)
68 Gs max at 2 msec
300 Gs max at 2 msec
Barracuda 7200.10 Serial ATA Product Manual, Rev. F
ST3500830AS
8 Mbytes