Seagate ST98823AS Momentus 5400.2 SATA Product Manual - Page 17

• Idle and Standby timers Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary. 2.10 Environmental specifications 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. Operating: 5° to 55°C (41° to 131°F) Nonoperating: -40° to 70°C (-40° to 158°F) 2.10.2 Temperature gradient Operating Nonoperating 20°C per hour (68°F per hour max), without condensation 30°C per hour (86°F per hour max), without condensation 2.10.3 Humidity 2.10.3.1 Relative humidity Operating Nonoperating 5% to 90% noncondensing (30% per hour max) 5% to 95% noncondensing (30% per hour max) 2.10.3.2 Wet bulb temperature Operating Nonoperating 30°C (86°F max) 40°C (104°F max) 2.10.4 Altitude Operating Nonoperating -304.8 m to 3,048 m (-1,000 ft to 10,000+ ft) -304.8 m to 12,192 m (-1,000 ft to 40,000+ ft) Momentus 5400.2 SATA Product Manual, Rev. C 11