Seagate U7 ST3120020A, Product Manual

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U7 Product Manual, Rev. D 5
*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.
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 tempera-
ture (°C max)
30 (operating)
40 (nonoperating)
Altitude,
operating
–198.12 m to 3,048 m
(–650 ft to 10,000+ ft)
Altitude,
nonoperating
(below mean sea
level, max)
–198.12 m to 12,192 m
(–650 ft to 40,000
+
ft)
Shock, operating
(Gs max at 2 msec)
63
Shock,
nonoperating
(Gs max at 2 msec)
350 Gs
Vibration,
operating
0.50 Gs (0 to peak, 22–350 Hz)
Vibration,
nonoperating
5.0 Gs (0 to peak, 22–350 Hz)
Drive acoustics
Sound power (bels)
(two discs) (one disc)
Idle*
Quiet seek
Performance seek
2.8 (typical), 3.0 (max)
2.8 (typical), 3.0 (max)
3.3 (typical), 3.6 (max) 2.1 (typical), <2.5 (max)
2.4 (typical), 2.8 (max)
3.0 (typical), 3.4 (max)
Nonrecoverable
read errors
1 per 10
14
bits read
Mean time
between failures
(power-on hours)
600,000
Contact start-stop
cycles (25°C, 40%
relative humidity)
50,000
Service Life 5 Years
SeaShield Yes
Drive
specification
ST3120020A ST380022A ST360012A ST340012A ST330012A