Oracle Exadata Storage Server X7-2 EF, Installation Manual

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Environmental Requirements
Specification Operating Nonoperating
Shock 3 Gs, 11 ms half-sine
IEC 60068-2-27 Test Ea
■ Roll-off: 1.25-inch roll-off
free fall, front to back rolling
directions
■ Threshold: 13 mm threshold
height at 0.65 m/s impact
velocity
ETE-1010-02 Rev A
Related Information
■
“Temperature Guidelines” on page 16
■
“Humidity Guidelines” on page 16
■
“Ventilation and Cooling Requirements” on page 17
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 approximately 22
°
Celsius (72
°
Fahrenheit) is recommended 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 is not running for a period of time.
Humidity Guidelines
The ambient relative humidity range of 45 to 50 percent is acceptable for safe data processing
operations. Most computer equipment can operate in a wide range (20 to 80 percent), but 45 to
50 percent is the recommended optimal range for the following reasons:
■
Helps protect computer systems from corrosion problems associated with high humidity
levels.
■
Provides the greatest operating time buffer in the event of air conditioner control failure.
■
Reduces or eliminates failures or temporary malfunctions caused by intermittent
interference from static discharges, which might occur when relative humidity is too low.
Electrostatic discharge (ESD) is easily generated and not easily dissipated in areas where the
relative humidity level is below 35 percent.
16 Oracle Exadata Storage Server X7-2 EF and HC Installation Guide • November 2018