Lenovo NeXtScale n1200 Installation And Service Manual page 20

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• 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: 10,700 m (35,105 ft)
– Relative humidity: 5% - 100%
– Maximum dew point: 29°C (84.2°F)
Notes:
1. Chassis is powered on.
2. Chassis is removed from original shipping container and is installed but not in use, for example, during
repair, maintenance, or upgrade.
3. A3 - Derate maximum allowable temperature 1°C/175 m above 950 m.
4. 5°C/hr for data centers employing tape drives and 20°C/hr for data centers employing disk drives.
5. The minimum humidity level for class A3 is the higher (more moisture) of the -12 °C dew point and the
8% relative humidity. These intersect at approximately 25°C. Below this intersection (~25C) the dew
point (-12 °C) represents the minimum moisture level, while above it relative humidity (8%) is the
minimum.
6. Moisture levels lower than 0.5°C DP, but not lower -10 °C DP or 8% relative humidity, can be accepted if
appropriate control measures are implemented to limit the generation of static electricity on personnel
and equipment in the data center. All personnel and mobile furnishings and equipment must be
connected to ground via an appropriate static control system. The following items are considered the
minimum requirements:
a. Conductive materials (conductive flooring, conductive footwear on all personnel that go into the
datacenter, all mobile furnishings and equipment will be made of conductive or static dissipative
materials).
b. During maintenance on any hardware, a properly functioning wrist strap must be used by any
personnel who contacts IT equipment.
7. The equipment acclimation period is 1 hour per 20 °C of temperature change from the shipping
environment to the operating environment.
8. Condensation is acceptable, but not rain.
9. Power consumption and heat output vary depending on the number and type of optional features
installed and the power-management optional features in use.
10. The noise emission level stated is the declared (upper limit) sound power level, in bels, for a random
sample of machines. All measurements are made in accordance with ISO 7779 and reported in
conformance with ISO 9296. Actual sound-pressure levels in a given location might exceed the average
values stated because of room reflections and other nearby noise sources. The noise emission level
stated in the declared (upper limit) sound-power level, in bels, for a random sample of system.
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Lenovo NeXtScale n1200 Enclosure Installation and Service Guide
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