v Maximum rate of temperature change:
– Tape drives: 5°C/hr (41°F/hr)
– Hard disk drives: 20°C/hr (68°F/hr)
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°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°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)
Attention:
v Design to ASHRAE Class A3, ambient of 40°C, 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.
v Specific processors supported environment:
– Processor E5-2699 v3, E5-2698 v3, E5-2697 v3, E5-2690 v3, E5-2667 v3,
E5-2643 v3, E5-2637 v3 are not supported with rear hard disk drive
installed.
– Processor E5-2699 v3, E5-2698 v3, E5-2697 v3, E5-2667 v3, E5-2643 v3,
E5-2637 v3 are not supported at 3.5" hard disk drive configuration.
v Chassis is powered on.
v A3 - Derate maximum allowable temperature 1°C/175 m above 950 m.
v 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, while above it relative
humidity (8%) is the minimum.
v 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:
– 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.
Chapter 1. The IBM System x3550 M5 server 11
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