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4 Momentus 7200.4 SATA Product Manual, Rev. C
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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.
***Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby
modes will not contribute to battery power consumption.
Read power (typical) 2.1 watts
Write power (typical) 2.2 watts
Idle mode, low power (typical) 0.69 watts
Standby mode 0.20 watts (typical)***
Sleep mode 0.20 watts (typical)***
Voltage tolerance (including noise) +5V ± 5%
Ambient temperature 0°C to 60°C (operating)
–40°C to 70°C (nonoperating)
Temperature gradient
(°C per hour max)
20°C (operating), 35°C (nonoperating)
Relative humidity 5% to 95% (operating and nonoperating
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 37.7 (operating)
40 (nonoperating)
Altitude, operating –304.8 m to 3048 m (–1000 ft to 10,000
+ ft)
Altitude, nonoperating
(meters below mean sea level, max)
–304.8 m to 12,192 m (–1000 ft to 40,000
+ ft)
Shock, operating (Gs max at 2 msec) 350
Shock, nonoperating
(Gs max at 2 msec)
800
Shock, nonoperating
(Gs max at 1 msec)
1,000
Shock, nonoperating
(Gs max at 0.5 msec)
600
Vibration, operating 1.0 G (0 to peak, 5–500 Hz)
Vibration, nonoperating 5 Gs (0 to peak, 5–500 Hz)
Drive acoustics, sound power (bels)
Idle** 2.3 (typical)
2.5 (max)
Performance seek 2.6 (typical)
2.7 (max)
Nonrecoverable read errors 1 per 10
14
bits read
Annualized Failure Rate (AFR) 0.5%
Load/Unload (U/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity
5°C, 80% relative humidity
5°C, 10% relative humidity
55°C, 16% relative humidity
600,000 software-controlled power on/off cycles
50,000 hard power on/off cycles
600,000 software-controlled power on/off cycles
50,000 hard power on/off cycles
Warranty For information regarding Warranty Support, visit
http://www.sea
gate.com/www/en-us/support/warranty_&_returns_assistance
Supports Hotplug operation per
Serial ATA Revision 2.6 specification
Yes (requires COMRESET from host after a hotplug event)
Table 1: Drive specifications
Drive specification
ST9500420AS
ST9500420ASG
ST9320423AS
ST9320423ASG
ST9250410AS
ST9250410ASG
ST9160412AS
ST9160412ASG
ST9120410AS
ST9120410ASG
ST980412AS
ST980412ASG