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Front-to-back cooling
Airflow moves from front-to-back to cool the Switch Fabric and auxiliary modules. Two 9012RC
cooling modules, at the top back of the 9012 chassis, provide the air movement and have
adjustable fan speed that depends on system temperature.
Figure 5: 9012RC cooling module
In the 9012 chassis, two fans exist in each 9012RC cooling module and pull air from front-to-
back. The platform polls all Switch Fabric card sensors and adjusts the 9012RC fan speed
accordingly.
Note:
Do not place the 9012 chassis directly against a wall, equipment, or other obstruction. Avaya
recommends 36 inches (91 centimeters) of free space in both the front and back of the
machine and also 6 inches (15.2 centimeters) on each side extra). Depending on the
circumstances, increase the free space at the side to allow for more airflow or cool airflow
into the 9012 chassis.
Installation — Cooling Modules
Airflow in the 9012 chassis
June 2013
29
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