IBM NeXtScale System Planning And Implementation Manual page 76

Power off
– Temperature: 5°C to 45°C (41°F - 113°F)
– Relative humidity: 8% - 85%
– Maximum dew point: 27°C (80.6°F)
Storage (non-operating):
– Temperature: 1°C to 60°C (33.8°F - 140°F)
– Altitude: 3050 m (10,006 ft.)
– Relative humidity: 5% - 80%
– Maximum dew point: 29°C (84.2°F)
Shipment (non-operating)
– Temperature: -40°C to 60°C (-40°F - 140°F)
– Altitude: 10700 m (35,105 ft.)
– Relative humidity: 5% - 100%
– Maximum dew point: 29°C (84.2°F)
3
5°C per hour for data centers that use tape drives and 20°C per hour for data centers that use disk
drives.
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Chassis is removed from original shipping container and is installed but not in use; for example,
during repair, maintenance, or upgrade.
5
The equipment acclimation period is 1 hour per 20 °C of temperature change from the shipping
environment to the operating environment.
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Condensation is acceptable, but not rain.
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IBM NeXtScale System Planning and Implementation Guide
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