Remove a Fan Module
The 4 fan modules are user-serviceable, hot-pluggable components. Each module has 2 fans. In normal circumstances, you should shutdown the system near the fan's end of life and replace it with a new fan. However, if a fan malfunctions while the system is running, remove the fan and quickly replace it with a functional fan to prevent overheating.
WARNING:
Overheating can stop packet processing.If you do not have a replacement fan on hand, shut down the system and disconnect the power before removing the malfunctioning fan.
Note:
When removing and replacing a fan, remember to first ground yourself using appropriate ESD grounding equipment such as a wrist or heel strap.