Seagate ST3400820ACE, ST3250820ACE, ST3320820ACE, ST3300820ACE manual Environmental specifications

2.9Environmental specifications

2.9.1Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 75°C (167°F) within the operating ambient conditions. Rec- ommended measurement locations are shown in Figure 6 on page 25.

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

Operating
ST3320820ACE, ST3300820ACE and ST3250820ACE	0° to 65°C (32° to 149°F)
ST3500830ACE and ST3400820ACE	0° to 62°C (32° to 143.6°F)
ST3750840ACE	0° to 60°C (32° to 140°F)
Nonoperating	–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	37.7°C (99.9°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.)

14 DB35.3 Series PATA Product Manual, Rev. C