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Chapter 3: Maintenance and Component Installation
3.9 System Cooling
Fans
The GPU node contains four hot-swappable heavy-duty fans. The fan modules are powered
from the fan board mounted within the GPU tray. These fans are powered by 8-pin power
connectors. The CPU node contains six counter-rotating fans. Fan speed is controlled by a
system temperature setting in BMC. If a fan fails, the remaining fans will ramp up to full speed.
The system can continue to run with a failed fan in the GPU node or CPU node. Replace any
failed fan at your earliest convenience with the same type and model.
Changing a System Fan
1. Determine which fan is failing. If possible, use BMC. If not, while the power is on,
examine the fans to determine which one has failed.
2. Squeeze both tabs at the side of the fan module and pull the fan out of the chassis.
3.
Replace the fan with a new one, making sure it is within specifications.
Figure 3-17. GPU Fan Replacement
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