Seagate ST980411ASG, ST9320421ASG, ST9250421ASG, ST9200423ASG Environmental specifications

2.10Environmental specifications

This section provides the temperature, humidity, shock, and vibration specifications for Momentus 7200.3 SATA drives.

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:	0°C to 60°C (32°F to 140°F)
Nonoperating:	–40°C to 70°C (–40°F to 158°F)

2.10.2Temperature gradient

Operating	20°C per hour (68°F per hour max), without condensation
Nonoperating	35°C per hour (95°F per hour max), without condensation

2.10.3Relative humidity

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

2.10.4Wet bulb temperature

Operating	37.7°C (99.8°F max)
Nonoperating	40°C (104°F max)

2.10.5Altitude

Operating	–60.96 m to 3,048 m (–200 ft to 10,000+ ft)
Nonoperating	–304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)

2.10.6Shock

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.

Note. Additional shock protection is provided by the Free Fall Protection feature on ST9320421ASG,

ST9250421ASG, ST9200423ASG, ST9160411ASG, ST9120411ASG and ST980411ASG models. See Sec- tion 2.13.1 for additional information about this feature.

2.10.6.1Operating shock

These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 350 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more than two times per second.

Momentus 7200.3 SATA Product Manual, Rev. B 11