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Chapter 3: Maintenance and Component Installation
3.8 System Cooling
The SuperServer 110P-FRN2T/110P-FRDN2T comes with five counter-rotating, hot-
swappable fans and two air shrouds. Make sure the chassis top cover makes a good seal
so the cooling air circulates properly through the chassis.
Fans
Five 4-cm fans provide the cooling for the system. These fans circulate air through the chassis
as a means of lowering the chassis internal temperature. The fans can adjust their speed
according to the heat level sensed in the system, which results in more efficient and quieter
fan operation. Fan speed is controlled by IPMI. Each fan has its own separate tachometer.
Figure 3-8. Fan Positions
1
5
4
3
2
Replacing Fans
If a fan fails, the remaining fans will ramp up to full speed, the overheat/fan fail LED on the
control panel will blink on and off, and an alarm will sound. Replace any failed fan at your
earliest convenience with the same type and model.
1. Determine which fan has failed using IPMI, or if necessary, open the chassis while the
system is running. Never run the server for long without the chassis cover.
2. Grasp the fan handle and the lever.
3. Squeeze the lever towards the handle and pull the fan module out of the chassis.
4. Push the new fan into the housing making sure the fan is oriented in the same direction
as the other fans.
5. Check that the fan is working properly.
6. Check that the overheat/fan fail LED on the control panel and the sounding alarm are
both off.
