Oracle EXADATA X5-2, Руководство по установке и настройке

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that the facility administrator or qualified electrical engineer verifies the grounding
method for the building, and performs the grounding work.
1.5 Temperature and Humidity Requirements
Airflow through Oracle Exadata Rack is from front to back. Refer to General
Environmental Requirements (page 1-1) for information on cooling and airflow.
Note:
Studies have shown that temperature increases of 10 degrees Celsius (15
degrees Fahrenheit) above 20 degrees Celsius (70 degrees Fahrenheit)
reduce long-term electronics reliability by 50 percent.
Excessive internal temperatures may result in full or partial shut down of
Oracle Exadata Database Machine.
The following table lists the temperature, humidity and altitude requirements for
operating and non-operating machines.
Table 1-34 Temperature, Humidity and Altitude Requirements
Condition Operating
Requirement Non-operating
Requirement Optimum
Temperature 5 to 32 degrees
Celsius (41 to 89.6
degrees Fahrenheit) -40 to 70 degrees
Celsius (-40 to 158
degrees Fahrenheit). For optimal rack
cooling, data center
temperatures from 21
to 23 degrees Celsius
(70 to 74 degrees
Fahrenheit)
Relative humidity 10 to 90 percent
relative humidity, non-
condensing Up to 93 percent
relative humidity. For optimal data
center rack cooling,
45 to 50 percent, non-
condensing
Altitude 3048 meters (10000
feet) maximum 12000 meters (40000
feet). Ambient temperature
is reduced by 1
degree Celsius per
300 m above 900 m
altitude above sea
level
Set conditions to the optimal temperature and humidity ranges to minimize the chance
of downtime due to component failure. Operating Oracle Exadata Rack for extended
periods at or near the operating range limits, or installing it in an environment where it
remains at or near non-operating range limits could significantly increase hardware
component failure.
The ambient temperature range of 21 to 23 degrees Celsius (70 to 74 degrees
Fahrenheit) is optimal for server reliability and operator comfort. Most computer
equipment can operate in a wide temperature range, but near 22 degrees Celsius (72
degrees Fahrenheit) is desirable because it is easier to maintain safe humidity levels.
Chapter 1
Temperature and Humidity Requirements
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