Airflow Requirements; Rack And Cabinet Requirements - Cisco Nexus 9336C-FX2 Hardware Installation Manual

Preparing the Site

Airflow Requirements

The switch is designed to be positioned with its ports in either the front or the rear of the rack depending on
your cabling and maintenance requirements. Depending on which side of the switch faces the cold aisle, you
must have fan and power supply modules that move the coolant air from the cold aisle to the hot aisle in one
of the following ways:
• Port-side exhaust airflow—Coolant air enters the chassis through the fan and power supply modules in
• Port-side intake airflow—Coolant air enters the chassis through the port end in the cold aisle and exhausts
You can identify the airflow direction of each fan and power supply module by its coloring as follows:
• Blue coloring indicates port-side exhaust airflow.
• Burgundy coloring indicates port-side intake airflow.
Note
To prevent the switch from overheating and shutting down, you must position the air intake for the switch in
a cold aisle, and all of the fan and power supply modules must have the same direction of airflow (even if
their coloring is different). If you must change the airflow direction for the switch, you must shutdown the
switch before changing the modules.

Rack and Cabinet Requirements

You can install the following types of racks or cabinets for your switch:
• Standard perforated cabinets
• Solid-walled cabinets with a roof fan tray (bottom-to-top cooling)
• Standard open four-post Telco racks
Work with your cabinet vendors to determine which of their cabinets meet the following requirements or see
the Cisco Technical Assistance Center (TAC) for recommendations:
• Use a standard 19-inch (48.3-cm), four-post Electronic Industries Alliance (EIA) cabinet or rack with
• The depth of a four-post rack must be 24 to 32 inches (61.0 to 81.3 cm) between the front and rear
Additionally, you must have power receptacles located within reach of the power cords used with the switch.
the cold aisle and exhausts through the port end of the chassis in the hot aisle.
through the fan and power supply modules in the hot aisle.
mounting rails that conform to English universal hole spacing per section 1 of the ANSI/EIA-310-D-1992
standard.
mounting rails (for proper mounting of the bottom-support brackets or other mounting hardware).
Cisco Nexus 9336C-FX2 NX-OS Mode Switch Hardware Installation Guide
Airflow Requirements
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