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6-7
Cooling
System Fans
The standard chassis contains nine 4-cm counter-rotating, high-performance fans.
Two more expansion card fans are available.
Fan speed is controlled by system temperature via IPMI. If a fan fails, the remaining
fan will ramp up to full speed and the overheat/fan fail LED on the control panel will
turn on. Replace any failed fan at your earliest convenience with the same type and
model (the system can continue to run with a failed fan).
Remove the top chassis cover while the system is still running to determine which
of the fans has failed. Then power down the system before replacing a fan. .
Replacing System Fans
1. After determining which fan has failed, turn off the system power.
2. Unplug the fan wiring from the serverboard and remove the failed fan.
3. Press the fan release tab to lift the failed fan from the chassis and pull it
completely from the chassis.
Standard Fans
Figure 6-11. System Fans
6-13
Chapter 6: Advanced Chassis Setup
Optional Fans
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