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3.8 System Cooling
Twelve heavy-duty fan modules provide cooling for the chassis. The fan modules are located
in the rear of the chassis. The chassis comes with pre-installed internal fan modules. Each
fan is hot-swappabe, and can be replaced without any connections being removed.
System Fan Failure
Fan speed is controlled by thermal sensors and ambient temperature through BMC. A system
fan module consists of two fan rotors. If any of fan module rotors fails, the remaining fan
modules will immediately ramp up to full speed. Replace any failed fan module at your earliest
convenience with the same type and model (the system can continue to run with a failed fan).
Do not remove the failed fan module from the chassis until the new fan is replaced.
Number of Failed Fans
One fan module fails.
One power supply fan fails.
Chapter 3: Maintenance and Component Installation
System Behavior
All system fan modules and power supply module
fans run at full speed.
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Troubleshooting
