Replacing A Fan Module During Operations - Cisco Nexus 9396PX Hardware Installation Manual

Replacing a Fan Module During Operations

If you are not able to push the module all the way into the slot, carefully slide the module out of the slot
Note
and check its electrical connectors for damage. If damaged, contact Cisco Technical Assistance for help.
If undamaged, repeat Step 6 to reinstall the module.
Step 10 Screw in both captive screws on the front of the module to secure the module to the chassis. Tighten each screw to 8
in-lb (0.9 N·m).
Step 11
Verify that the Status (STS) LED turns on and becomes amber.
Step 12 Reconnect each of the APIC-connection cables and verify that the LED for each port becomes green.
Under each set of two uplink ports, there is an Active (ACT) LED that indicates whether the ports are active for this
switch. Connect cables to only the active ports.
Replacing a Fan Module During Operations
There must always be at least one fan module installed in the chassis to maintain the designed airflow. You
can remove one fan module temporarily to replace it with another fan module within two minutes to avoid a
shutdown, but if the replacement fan module is not available, leave the original fan module in the chassis.
All fan and power supply modules must have the same airflow direction or else an error can occur with the
switch overheating and shutting down. You can determine the airflow direction of a fan module by the color
of the stripe on the front of the module. If the fan module has a blue stripe for port-side exhaust airflow, the
power supplies must have blue or gray coloring for the same airflow direction. If the fan module has a burgundy
stripe for port-side intake airflow, the power supplies must have burgundy or green coloring for the same
airflow direction. To avoid over heating the switch, make sure that the fan modules are positioned in one of
the following ways:
• For port-side exhaust airflow with blue coloring, position the fan modules in a cold aisle.
• For port-side intake airflow with burgundy coloring, position the ports in a cold aisle.
Before you begin
Before you can replace a fan module, ensure that the following conditions exist:
• There are two functioning fan modules in the other fan slots. In order to replace a fan module during
• The replacement fan module must have the same airflow direction as the other modules in the chassis.
If you must replace the fan module during operations and the above conditions are not met, leave the fan
module that you need to replace in the chassis to preserve the designed airflow until you have the required
module.
Step 1
Remove the fan module that you need to replace as follows:
a) Verify that the fan modules that you are not replacing each have a lit Status (STS) LED (see the following figure for
the location of the LED). If you are replacing a fan module during operations, the other two fan modules must be
operating.
Cisco Nexus 9396PX ACI-Mode Switch Hardware Installation Guide
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operations, there must be two fan modules circulating air in the chassis at all times. The other fan module
is redundant and can be replaced.
Replacing Modules