Lenovo NeXtScale nx360 M5 Installation And Service Manual page 23

– Temperature: 5°C - 30°C (41°F to 86°F)
– Altitude : 0 - 900 m (2,953 ft)
– Front HDD Thickness: less or equal to 15 mm
• Nvidia K2
– 1pcs to 4pcs
– Temperature: 5°C - 30°C (41°F to 86°F)
– Altitude : 0 - 900 m (2,953 ft)
– Front HDD Thickness: less or equal to 15 mm
Particulate contamination:
Attention:
• Design to ASHRAE Class A3, temperature: 36°C to 40°C (96.8°F to 104°F), with relaxed support:
– Support cloud such as workload with no performance degradation acceptable (turbo-off)
– Under no circumstance, can any combination of the worst case workload and configuration result
in system shutdown or design exposure at 40°C
– The worst case workload (such as linpack and turbo-on) may have performance degradation
• 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 compute node. For information
about the limits for particulates and gases, see "Particulate contamination" on page 991.
Notes:
1. Chassis is powered on.
2. A3 - Derate maximum allowable temperature 1°C/175 m above 950 m.
3. 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 (~25°C), the
dew point (-12°C) represents the minimum moisture level; above the intersection, relative humidity
(8%) is the minimum.
4. 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 who 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.
5. 5°C/hr for data centers employing tape drives and 20°C/hr for data centers employing disk drives.
6. Chassis is removed from original shipping container and is installed but not in use, for example, during
repair, maintenance, or upgrade.
7. The equipment acclimation period is 1 hour per 20°C of temperature change from the shipping
environment to the operating environment.
8. Condensation, but not rain, is acceptable.
9. When booting Windows Server 2012 or Windows Server 2012 R2 with a legacy VGA device and two or
more NVIDIA GRID K1 or four or more NVIDIA GRID K2 cards, one of the NVIDIA GPUs is unavailable
for use. The GPU appears in Windows Device Manager with a yellow bang, and the device status is
reported as Windows has stopped this device because it has reported problems. (Code 43). The
remaining seven GPUs function normally.
10. NVIDIA Grid K2 card specifically should only be used with one 8 pin aux power cable rather than both
the 8 pin and 6 pin aux power cable in NeXtScale.
.
Chapter 1 The Lenovo NeXtScale nx360 M5 compute node
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