Environmental Specifications; Ambient Temperature; Temperature Gradient; Humidity - Seagate ST9100828AB - Momentus 5400.3 Blade Server 100 GB Hard Drive Product Manual

2.10

Environmental specifications

2.10.1

Ambient 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)
2.10.2

Temperature 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
2.10.3

Humidity

2.10.3.1 Relative humidity
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
2.10.3.2 Wet bulb temperature
Operating 30°C (86°F max)
Nonoperating 38°C (100.4°F max)
2.10.4

Altitude

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