Seagate ST3120020A Product Manual page 15

U7 Product Manual, Rev. D
Drive
specification
Ambient
temperature
Temperature
gradient
(°C per hour max)
Relative humidity
Relative humidity
gradient
Wet bulb tempera-
ture (°C max)
Altitude,
operating
Altitude,
nonoperating
(below mean sea
level, max)
Shock, operating
(Gs max at 2 msec)
Shock,
nonoperating
(Gs max at 2 msec)
Vibration,
operating
Vibration,
nonoperating
Drive acoustics
Sound power (bels)
Idle*
Quiet seek
Performance seek
Nonrecoverable
read errors
Mean time
between failures
(power-on hours)
Contact start-stop
cycles (25°C, 40%
relative humidity)
Service Life
SeaShield
*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.
ST3120020A ST380022A
(two discs)
2.8 (typical), 3.0 (max)
2.8 (typical), 3.0 (max)
3.3 (typical), 3.6 (max)
ST360012A
0° to 60°C (operating)
–40° to 70°C (nonoperating)
20°C (operating)
30°C (nonoperating)
5% to 90% (operating)
5% to 95% (nonoperating)
30% per hour max
30 (operating)
40 (nonoperating)
–198.12 m to 3,048 m
(–650 ft to 10,000+ ft)
–198.12 m to 12,192 m
(–650 ft to 40,000
63
350 Gs
0.50 Gs (0 to peak, 22–350 Hz)
5.0 Gs (0 to peak, 22–350 Hz)
2.1 (typical), <2.5 (max)
14
1 per 10 bits read
600,000
50,000
5 Years
Yes
ST340012A ST330012A
+
ft)
(one disc)
2.4 (typical), 2.8 (max)
3.0 (typical), 3.4 (max)
5