Seagate ST9120822SB, ST980815SB, ST960815SB, ST9402116SB, ST9160821SB 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 8,750 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	40°C	(104°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)

10 Momentus 5400.3 SATA Blade Server Product Manual, Rev. E