Seagate ST31000424CS Environmental specifications, Drive case temperature, Temperature gradient

2.9Environmental specifications

2.9.1Drive case temperature

Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet (3,048 meters).

Drive case temperature should be measured at the location indicated in Figure 3 on page 23.

Operating (drive case temperature)	0° to 75°C (32° to 167°F)
Non-operating (ambient *)	–40° to 70°C (–40° to 158°F)

* Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.

2.9.2Temperature gradient

Operating	20°C per hour (68°F per hour max.), without condensation
Non-operating	30°C per hour (86°F per hour max.)

2.9.3Humidity

2.9.3.1Relative humidity

Operating	5% to 90% noncondensing (30% per hour max.)
Non-operating	5% to 95% noncondensing (30% per hour max.)

2.9.3.2Wet bulb temperature

Operating	37.7°C	(99.9°F max.)
Non-operating	40.0°C	(104°F max.)

2.9.4Altitude

Operating	–60.96m to 3,048m (–200 ft to 10,000+ ft)
Non-operating	–60.96m to 12,192m (–200 ft to 40,000+ ft)

Pipeline HD.2 Series SATA Product Manual, Rev. E 15