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Momentus 7200.3 SATA Product Manual, Rev. C 11
2.10 Environmental specifications
This section provides the temperature, humidity, shock, and vibration specifications for Momentus 7200.3
SATA drives.
2.10.1 Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed
65°C (149°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
2.10.2 Temperature gradient
2.10.3 Relative humidity
2.10.4 Wet bulb temperature
2.10.5 Altitude
2.10.6 Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
Note. Additional shock protection is provided by the Free Fall Protection feature on ST9320421ASG,
ST9250421ASG, ST9200423ASG, ST9160411ASG, ST9120411ASG and ST980411ASG models. See
Sec-
tion 2.13.1 for additional information about this feature.
2.10.6.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 350 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.
Operating: 0°C to 60°C (32°F to 140°F)
Nonoperating: –40°C to 70°C (–40°F to 158°F)
Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 35°C per hour (95°F per hour max), without condensation
Operating 5% to 95% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
Operating 37.7°C (99.8°F max)
Nonoperating 40°C (104°F max)
Operating –60.96 m to 3,048 m (–200 ft to 10,000+ ft)
Nonoperating –304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)