Seagate ST980815AB, ST9402116AB, ST960815AB, ST9120822AB, ST9160821AB Environmental specifications

2.10Environmental specifications

2.10.1Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Duty 50%, power-on hours (POH) of 8,760 per year (24 hours per day, 7 days per week operation). Actual drive case temperature should not exceed 45°C (113°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	0° to 40°C (32° to 104°F)
Nonoperating	–40° to 70°C (–40° to 158°F)

2.10.2Temperature gradient

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

2.10.3Humidity

2.10.3.1Relative humidity

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

2.10.3.2Wet bulb temperature

Operating	30°C	(86°F max)
Nonoperating	38°C	(100.4°F max)

2.10.4Altitude

Operating	–304.8 m to 3,048 m (–1,000 ft to 10,000 ft)
Nonoperating	–304.8 m to 12,192 m (–1,000 ft to 40,000 ft)

14 Momentus 5400.3 PATA Blade Server Product Manual, Rev. B