CHAPTER 5
Replacing Components
• Replacing a Power Supply Module, on page 39
Replacing a Power Supply Module
The switch requires two power supplies for redundancy. With one power supply providing the necessary
power for operations, you can replace the other power supply during operations so long as the new power
supply has the same airflow direction as the other modules in the chassis.
You can replace a power supply with another supported power supply that has the same power source type
as the other installed power supply. Additionally, the airflow direction of the power supply must match or
conform to the airflow direction of the installed fan modules. For the airflow direction used by the switch,
see the coloring of the fan modules.
Replacing an AC Power Supply
You can replace an AC power supply during operations so long as the other power supply provides to the
switch.
Before you begin
You can determine the airflow direction by looking at the coloring of the latch on each power supply. AC
power supplies with burgundy latches have port-side intake airflow direction, and power supplies with blue
latches have port-side exhaust airflow direction.
Note
•
• An AC power source must be within reach of the power cable that will be used with the replacement
power supply. If you are using n+n power redundancy, there must be a separate power source for each
power supply installed in the chassis.
• There must be an earth ground connection to the chassis that you are installing the replacement module.
AC power supplies connected to AC power sources are automatically grounded through their power
cable.
Cisco Nexus 93108TC-FX3 ACI-Mode Switch Hardware Installation Guide
39
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