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Momentus 5400.3 PATA Blade Server Product Manual, Rev. B
2.10 Environmental specifications
2.10.1 Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Duty 50%, power-on hours (POH) of 8,760 per year (24 hours per day, 7 days per week operation). Actual
drive case temperature should not exceed 45°C (113°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 Humidity
2.10.3.1 Relative humidity
2.10.3.2 Wet bulb temperature
2.10.4 Altitude
Operating 0° to 40°C (32° to 104°F)
Nonoperating –40° to 70°C (–40° to 158°F)
Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 30°C per hour (86°F per hour max), without condensation
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
Operating 30°C (86°F max)
Nonoperating 38°C (100.4°F max)
Operating –304.8 m to 3,048 m (–1,000 ft to 10,000 ft)
Nonoperating –304.8 m to 12,192 m (–1,000 ft to 40,000 ft)