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Chapter 3: Maintenance and Component Installation
System Cooling
Four 4-cm counter-rotating fans provide the cooling for the system. Each fan unit is actually
The chassis provides two additional open fan housings, where an additional system fan may
be added for optimal cooling.
It is very important that the chassis top cover is installed for the cooling air to circulate properly
through the chassis and cool the components.
Installing Fans
Fan speed is controlled by system temperature via BIOS. If a fan fails, the remaining fans
will ramp up to full speed. Replace any failed fan at your earliest convenience with the same
type and model (the system can continue to run with a failed fan).
Replacing a System Fan
1. With the server powered on, remove the chassis cover and inspect the fans to see
which one has failed.
2. Power down the server and remove the AC power cord.
3. Remove the failed fan's wiring from the fan header on the motherboard.
4. Lift the failed fan from the chassis and pull it completely out.
5. Place the new fan into the vacant space in the housing while making sure the arrows on
the top of the fan (indicating air direction) point in the same direction as the arrows on
the other fans.
Figure 3-5. Removing a Hard Drive
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