Chassis Fan Tray Chassis and Power Supplies
page 3-56 OmniSwitch 6900 Hardware Users Guide June 2020
Chassis Fan Tray
The OmniSwitch 6900 chassis houses a single fan tray with four independently-operating fan or multiple
fan trays depending on the model. The fans are the main temperature control components for the switch,
providing cooling airflow for all chassis components. This airflow is a crucial factor in the switch’s overall
operability. Refer to “Airflow Recommendations” on page 3-33 for more information.
Important. The fan tray is a required component. Never attempt to operate the switch without a fan
tray installed
Airflow Direction
The fan tray is available in front-to-rear airflow or rear-to-front airflow models. Power supplies are also
direction-specific (front-to-rear or rear-to-front). When installing a fan tray in the chassis, it must match
the airflow direction of the power supplies. (See “Airflow Mismatch” on page 3-35 for more information.)
OmniSwitch 6900 Fan Tray
Model OS6900-FT-F, Front-to-Rear
OS6900-FT-R, Rear-to-Front
Product Compatibility OmniSwitch 6900-X20/X40/X72/Q32/T20/T40
Airflow Airflow direction is indicated by an F->R or R->F label and
purple coloring for rear-to-front.
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