Fans; Fan Failure; Fan Replacement - Silicon Graphics Altix XE250 User Manual

4: Advanced Chassis Setup

Fans

Fan Failure

Fan Replacement

4-94
Three 8-cm hot-swap fans provide the cooling for the SGI Altix XE250 server. It is very important
that the chassis top cover is properly installed and making a good seal in order for the cooling air
to circulate properly through the chassis and cool the components.
Fan speed is controlled by system temperature via a BIOS setting. If a fan fails, the remaining fans
increase their RPM up to full speed and the overheat/fan fail LED on the control panel illuminates.
Replace the failed fan as soon as possible. Remove the top chassis cover while the system is
operating to determine which of the fans has failed.
Removal
1. Remove the chassis cover.
2. Press the tabs on the sides of the fan to unlock and remove the fan and its housing. The fan's
power connections disconnect automatically.
3. System power does not need to be shut down since the fans are hot-pluggable.
Installation
1. Position the new fan into the space vacated by the failed fan.
2. You will hear an audible "click" when the fan is installed and the power connectors engage.
3. If the system power is on, the hot-plug feature causes the fan to start immediately when it is
connected to the fan connector on the node board.
007-5467-001