Seagate ST1.3 ST1.3 Series Product Manual - Page 17

2.8 Environmental specifications 2.8.1 Ambient temperature Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 70°C (158°F) within the operating ambient conditions. Case temperature of the drive operating at 60°C ambient may hit a maximum of 70°C at certain parts of the casing. Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet. Operating 0° to 60°C (32° to 140°F) (70°C max case temperature) Nonoperating -40° to 70°C (-40° to 158°F) 2.8.2 Temperature gradient Operating 20°C per hour (36°F per hour max), without condensation Nonoperating 30°C per hour (54°F per hour max), without condensation 2.8.3 Humidity 2.8.3.1 Relative humidity Operating 5% to 90% noncondensing (30% per hour max) Nonoperating 5% to 95% noncondensing (30% per hour max) 2.8.3.2 Wet bulb temperature Operating 33°C (91.4°F max) [1] Nonoperating 40°C (104°F max) [2] [1] Operating: Wet bulb temperature is calculated by the operating Temperature and the Relative Humidity levels. [2] Nonoperating: Wet bulb temperature is calculated by the nonoperating Temperature and the Relative Humidity levels. 2.8.4 Altitude Operating -60.98 m to 3,048 m (-200 ft to 10,000+ ft) Nonoperating -60.98 to 12,192 m (-200 ft to 40,000+ ft) ST1.3 Series Product Manual, Rev. D 11