Seagate ST740211DE-40GB, ST760211DE-60GB, ST730212DE-30GB manual Environmental specifications

2.8Environmental specifications

2.8.1Ambient 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 operating 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)

2.8.2Temperature 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

2.8.3Humidity

2.8.3.1Relative humidity

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

2.8.3.2Wet 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.

2.8.4Altitude

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)

Lyrion Series IDE Product Manual, Rev. F 9