Seagate ST94811AB manual Environmental specifications, Ambient temperature, Temperature gradient

2.10Environmental specifications

2.10.1Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 40°C (104°F) within the operating ambient conditions.

Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.

Operating	5° to 55°C (41° to 131°F)
Nonoperating	–40° to 65°C (–40° to 153°F)

2.10.2Temperature gradient

Operating	20°C per hour (68°F per hour max), without condensation
Nonoperating	30°C per hour (86°F per hour max)

2.10.3Humidity

2.10.3.1Relative humidity

Operating	5% to 90% noncondensing (30% per hour max)
Nonoperating	5% to 95% noncondensing (30% per hour max)

2.10.3.2Wet bulb temperature

Operating	33°C	(91.4°F max)
Nonoperating	40°C	(104°F max)

2.10.4Altitude

Operating	–198.12 m to 3,048 m (–650 ft to 10,000+ ft)
Nonoperating	–304.8 to 12,192 m (–1,000 ft to 40,000+ ft)

Momentus Blade Server Product Manual, Rev. B 9