Temperature Guidelines; Humidity Guidelines; Ventilation And Cooling - Oracle Server X6-2 Installation Manual

"Temperature Guidelines" on page 21
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"Humidity Guidelines" on page 21
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Related Information
"Ventilation and Cooling" on page 21
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Temperature Guidelines

An ambient temperature range of 21° to 23° Celsius (70° to 74° Fahrenheit) is optimal for
server reliability and operator comfort. Most computer equipment can operate in a wide
temperature range, but near 22° Celsius (72° Fahrenheit) is desirable because it is easier to
maintain safe humidity levels. Operating in this temperature range provides a safety buffer in
the event that the air conditioning system goes down for a period of time.

Humidity Guidelines

The ambient relative humidity range of 45 to 50 percent is suitable for safe data processing
operations. Most computer equipment can operate in a wide range (20 to 80 percent), but the
range of 45 to 50 percent is recommended for the following reasons:
Optimal range helps protect computer systems from corrosion problems associated with
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high humidity levels.
Optimal range provides the greatest operating time buffer in the event of air conditioner
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control failure.
This range helps to avoid failures or temporary malfunctions caused by intermittent
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interference from static discharges that may occur when relative humidity is too low.
Electrostatic discharge (ESD) is easily generated and less easily dissipated in areas where
the relative humidity level is below 35 percent. ESD risk becomes critical when levels drop
below 30 percent.

Ventilation and Cooling

Always provide adequate space in front of and behind the rack to allow for proper ventilation of
the rackmounted servers. Do not obstruct the front or rear of the rack with equipment or objects

Ventilation and Cooling

Preparing for Server Installation 21