Seagate ST940811A, ST960814A, ST9100826A, ST980821A, ST9120826A manual Environmental specifications

2.10Environmental specifications

2.10.1Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 65°C (149°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	5° to 55°C (41° to 131°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)

2.10.5Shock

All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may be applied in the X, Y or Z axis.

2.10.5.1Operating shock

These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 250 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more than two times per second.

Momentus 5400 FDE Product Manual, Rev. C 13