Seagate ST31000525SV 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 2 on page 21.

Operating (Drive case temperature)	0° to 70°C	(32° to 158°F)
Nonoperating (Drive case temperature)	–40° to 70°C	(–40° to 158°F)

2.9.2Temperature gradient

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

2.9.3Humidity

2.9.3.1Relative humidity

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

2.9.3.2Wet bulb temperature

Operating:	37.7°C	(99.9°F max)
Nonoperating:	40.0°C	(104°F max)

2.9.4Altitude

Operating:	–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating:	–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

12 SV35.5 Series SATA Product Manual, Rev. A