Cisco C-series Nexus 5020 Hardware-Installationshandbuch - Seite 13
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Chapter 4
Replacing Components
Replacing a Fan Module
Figure 4-12
Wiring the DC Power Connector
2
Replacing a Fan Module
The fan module is designed to be removed and replaced while the system is operating without presenting
an electrical hazard or damage to the system, if the replacement is performed promptly.
If you are replacing a fan module, you must replace it with another that uses the same direction of airflow
as all of the other modules in the chassis, and that airflow direction must take in cool air from the cold
aisle and exhaust heated air to the hot aisle. You can use port-side exhaust fan modules with all Cisco
Nexus 5000 switches and you can alternatively use port-side intake fan modules with only the 5548UP
switches.
The Cisco Nexus 5000 and 5500 switches do not support modules using two different directions of
Caution
airflow. If you power up a switch with modules using more than one airflow direction, you must power
down the switch before replacing the modules that do not take in air from the cold aisle. When all of the
modules have the same direction of airflow and they are positioned to take in coolant air from the cold
aisle, you may power up the switch.
Cisco Nexus 5000 Series Hardware Installation Guide
4-13