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Constellation Serial ATA Product Manual, Rev. D 15
3.9 Environmental specifications
3.9.1 Ambient temperature
Ambient temperature is defined as the temperature of th
e environment immediately surrounding the drive.
Actual drive case temperature should not exceed 60°C (140°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet
(3,048 meters).
3.9.2 Temperature gradient
Operating: 20°C per hour (68°F per hour max), without condensation
Nonoperating: 20°C per hour (86°F per hour max)
3.9.3 Humidity
3.9.3.1 Relative humidity
Operating: 5% to 95% noncondensing (20% per hour max)
Nonoperating: 5% to 95% noncondensing (20% per hour max)
3.9.3.2 Wet bulb temperature
Operating: 37.7°C (99.9°F max)
Nonoperating: 40.0°C (104.0°F max)
3.9.4 Altitude
Operating: –60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating: –60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
3.9.5 Shock
All shock specifications assume that th
e 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.
3.9.5.1 Operating shock
These drives comply with the pe
rformance levels specified in this document when subjected to a maximum
operating shock of 70 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than once every 2 seconds.
3.9.5.2 Nonoperating shock
The nonoperating shock level that the drive can experien
ce without incurring physical damage or degradation
in performance when subsequently put into operation is 400 Gs based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
Operating: 5° to 55°C (41° to 131°F)
Nonoperating: –40° to 70°C (–40° to 158°F)