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4 U Series 9 Product Manual, Rev. D
*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.
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)
Quiet seek 2.8 (typical)
3.0 (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 ST3160022A ST3120025A ST380012A ST360019A