IBM NeXtScale nx360 M4 Installation And Service Manual page 25

Environment:
7
Server off :
v Temperature: 5°C to 45°C (41°F to 113°F)
v Relative humidity: 8% to 85%
v Maximum dew point: 27°C (80.6°F)
Storage (non-operating):
v Temperature: 1°C to 60°C (33.8°F to 140.0°F)
v Maximum altitude: 3,050 m (10,000 ft)
v Relative humidity: 5% to 80%
v Maximum dew point: 29°C (84.2°F)
Shipment (non-operating):
v Temperature: -40°C to 60°C (-40°F to 140.0°F)
v Maximum altitude: 10,700 m (35,105 ft)
v Relative humidity: 5% to 100%
v Maximum dew point: 29°C (84.2°F)
Particulate contamination
Attention:
v Design to ASHRAE Class A3, temperature: 36°C - 40°C (96.8°F - 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
v 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 379.
Notes:
1. Onboard LSI software SATA RAID supports SATA drives and Solid state drives
(SSD). SAS drives are not supported for software RAID. The booting and use of
internal drives with VMware is not supported with the ServeRAID C100
(software RAID) controller.
2. Chassis is powered on.
3. A3 - Derate maximum allowable temperature 1°C/175 m above 950 m.
4. 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.
5. 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:
8
9
Chapter 1. The IBM NeXtScale nx360 M4 Compute Node Type 5455
7