10 environmental specifications, 1 ambient temperature, 2 temperature gradient – Seagate MOMENTUS 5400.3 ST9160821AB User Manual

Page 20: 3 humidity, 1 relative humidity, 2 wet bulb temperature, 4 altitude, Environmental specifications 2.10.1, Ambient temperature, Temperature gradient

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Momentus 5400.3 PATA Blade Server Product Manual, Rev. B

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.

2.10.2

Temperature gradient

2.10.3

Humidity

2.10.3.1

Relative humidity

2.10.3.2

Wet bulb temperature

2.10.4

Altitude

Operating

0° to 40°C (32° to 104°F)

Nonoperating

–40° to 70°C (–40° to 158°F)

Operating

20°C per hour (68°F per hour max), without condensation

Nonoperating

30°C per hour (86°F per hour max), without condensation

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

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

Operating 30°C (86°F max)

Nonoperating 38°C (100.4°F max)

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)

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