Before you begin
If a fan blank module is installed, remove it as follows:
• Press the two sides of the fan blank module handle and pull on the handles enough to unseat it from its
connectors.
• Holding the handle, pull the module out of the chassis.
Figure 9: Inserted Fan Blank Modules
Fan blank modules1
• A fan slot must be open and ready for the new fan module to be installed.
• You must have a new fan module on hand and ready to install within one minute of removing the original
fan module if the switch is operating.
• The new fan module must have the same airflow direction as the other fan and power supply modules
installed in the switch. All of these modules must have either red coloring (port-side intake airflow) or
they must all have blue coloring (port-side exhaust airflow).
Step 1 Holding the fan module by its handle, align the back of the fan module (the side with the electrical connectors) to the
open fan slot in the chassis.
Step 2 Slide the fan module into the fan module bay until it clicks into place and tighten the locking screw.
Step 3 Verify that the Status LED turns on and becomes green.
Removing a Fan Module
The fan module is designed to be removed and replaced while the system is operating without presenting an
electrical hazard or damaging the system.
The Cisco MDS 9000 Series Switches have internal temperature sensors that can shut down the system if the
temperature within the chassis exceed certain safety thresholds. To accurately monitor the system temperature,
the temperature sensors require sufficient airflow through the chassis. In the event that a fan module is removed
from the chassis and the airflow is reduced, the system will bypass the temperature sensor information and
shut down after five minutes to prevent undetected overheating. However, the switches will shut down sooner
if the major temperature threshold is exceeded.
Caution
Installing a Cisco MDS 9132T Switch
19
Installing a Cisco MDS 9132T Switch
Removing a Fan Module
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