Seagate Barracuda ST3120022A - Manual (Page 14)

4 Barracuda 7200.7 Product Manual, Rev. E
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
Average latency (msec) 4.16
Power-on to ready (sec typical) 10 sec
Standby to ready (sec typical) 10 sec
Startup current (typical) 12V (peak) 2.8 amps
Track-to-track seek time (msec typical) <1.0 (read), <1.2 (write)
Average seek time (msec typical)
8.5
Average seek, read (msec typical) 8.5
Average seek, write (msec typical) 9.5
Seek power (typical) 12.5 watts
Read/write power (typical) 12.0 watts
Idle mode (typical) 7.5 watts
Standby mode (typical) 0.9 watts
Sleep mode (typical) 0.9 watts
Voltage tolerance (including noise)
5V ± 5%
12V ± 10%
Ambient temperature 0° to 60°C (operating)
–40° to 70°C (nonoperating)
Temperature gradient (°C per hour max) 20°C (operating)
30°C (nonoperating)
Relative humidity 5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 33 (operating)
40 (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)
Shock, operating (Gs max at 2 msec) 63
Shock, nonoperating (Gs max at 2 msec) 350 Gs
Vibration, operating 1.0 G (0 to peak, 5–350 Hz)
Vibration, nonoperating 5.0 Gs (0 to peak, 22–350 Hz)
Drive acoustics Sound power (bels)
Idle* <2.5 (typical)
2.7 (max)
<2.2 (typ)
2.4 (max)
Quiet seek 2.8 (typical)
3.0 (max)
2.5 (typ)
2.7 (max)
Performance seek 3.4 (typical)
3.7 (max)
3.1 (typ)
3.5 (max)
Nonrecoverable read errors 1 per 10 14 bits read
Mean time between failures
(power-on hours)
600,000
Service life 5 Years
Contact start-stop cycles
(25°C, 40% rel. humidity)
50,000
Drive specification
ST3160021A
ST3160023A
ST3120022A
ST3120026A
ST380011A
ST380013A ST360014A ST340014A