Fans and air intake areas
The storage system provides air circulation through various fans throughout the
frame. You must maintain the correct operating environment requirements for your
models at each air intake location.
Table 82 summarizes fan, intake, and exhaust locations.
Table 82. Machine fan location
DS8880 Fan Location Machine Location Intake Location Exhaust Location
Entire machine Entire Front covers Rear covers
Power complex Bottom Front covers Rear covers
Operating environment requirements
You must meet specific operating environment requirements at all the air intake
locations of your storage system.
The operating points vary depending on the state of the system. The system can be
in the following states:
v Powered on
v Powered off
v In storage
Powered on:
Plan for the operating ranges and recommended operating points of the storage
system.
Table 83 provides the operating ranges for your storage system when its power is
on.
Table 83. Operating extremes with the power on
Measurement Value
Altitude 0 - 2133 m (0 - 7000 ft)
Dry bulb temperature 16 - 32°C (60 - 90°F)
Relative humidity 20 - 80%
Wet bulb temperature (maximum) 23°C (73°F)
Table 84 provides the optimum operating points for your storage system with its
power on.
Table 84. Optimum operating points with the power on
Measurement Value
Temperature 22°C (72°F)
Relative humidity 45%
Table 85 on page 165 provides the operating ranges for a storage system with
power on.
164 DS8880 Introduction and Planning Guide
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