Lenovo HX3510-G Installation And Service Manual page 21

• Temperature: -40°C–60°C (-40°F–140°F)
• Altitude: 10,700 m (35105 ft)
• Relative humidity: 5%–100%
• Maximum dew point: 29°C (84.2°F)
Attention:
• Design to ASHRAE Class A3, ambient of 40°C (104°F), with relaxed support:
– Support cloud like workload with no performance degradation acceptable (Turbo-Off).
– Under no circumstance, can any combination of worst case workload and configuration result in
system shutdown or design exposure at 40°C (104°F).
• Chassis is powered on.
• A3 - Derate maximum allowable temperature 1°C (33.8°F) per 175 m (574 ft) above 950 m (3117 ft).
• The minimum humidity level for class A3 is the higher (more moisture) of the -12°C (10.4°F) dew point
and the 8% relative humidity. These intersect at approximately 25°C (77°F). Below this intersection
(~25°C) the dew point (-12°C) represents the minimum moisture level, while above it relative humidity
(8%) is the minimum.
• Moisture levels lower than 0.5°C (32.9°F) dew point, but not lower -10°C (14°F) dew point 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:
– 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).
– During maintenance on any hardware, a properly functioning wrist strap must be used by any
personnel who contacts IT equipment.
• 5°C/hr (41°F/hr) for data centers employing tape drives and 20°C/hr (68°F/hr) for data centers
employing disk drives.
• Chassis is removed from original shipping container and is installed but not in use, for example,
during repair, maintenance, or upgrade.
• The equipment acclimation period is 1 hour per 20°C (68°F/hr) of temperature change from the
shipping environment to the operating environment.
• Condensation is acceptable, but not rain.
• When the ambient temperature is higher than 36°C (96.8°F), 135-watt and 145-watt microprocessors
might face performance degradation when operating a heavy workload.
• Your server supports the active Graphics Processing Unit (GPU) only. To support the GPU, observe
the following system requirements:
Chassis
2.5-inch-drive chassis
When the ambient temperature is above 35°C (95°F), the GPU is not supported due to thermal
limitation.
Particulate contamination: airborne particulates and reactive gases acting alone or in combination with other
environmental factors such as humidity or temperature might pose a risk to the server. For information about
the limits for particulates and gases, see "Particulate contamination" on page 1213.
GPU wattage
Not exceed 300 watt
Ambient temperature
Not exceed 35°C (95°F)
.
Chapter 1 The Lenovo Converged HX Series server
CPU wattage
No special requirement
9