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Installing the Chassis
Airflow Considerations
The switch comes with fan and power supply modules that have either port-side intake or port-side exhaust
airflow for cooling the switch. If you are positioning the port end of the switch in a cold aisle, make sure that
the switch has port-side intake fan modules with burgundy coloring. If you are positioning the fan and power
supply modules in a cold aisle, make sure that the switch has port-side exhaust fan modules with blue colorings.
All fan modules must have the same direction of airflow.
Installation Guidelines
When installing the switch, follow these guidelines:
• Ensure that there is adequate clearance space around the switch to allow for servicing the switch and for
• Ensure that you are positioning the switch in a rack so that it takes in cold air from the cold aisle and
• Ensure that the chassis can be adequately grounded. If the switch is not mounted in a grounded rack, we
• Ensure that the site power meets the power requirements for the switch. If available, you can use an
Caution
• Ensure that circuits are sized according to local and national codes. Typically, this often requires one or
Caution
Note
adequate airflow.
exhausts air to the hot aisle. If there is blue coloring on the fan modules, the switch is configured for
port-side exhaust airflow and you must position the module side of the switch in a cold aisle. If there is
burgundy coloring on the fan modules, the switch is configured for port-side intake airflow and you must
position the port side of the switch in a cold aisle.
recommend connecting the system ground on the chassis directly to an earth ground.
uninterruptible power supply (UPS) to protect against power failures.
Avoid UPS types that use ferroresonant technology. These UPS types can become
unstable with the switch, which can have substantial current draw fluctuations
because of fluctuating data traffic patterns.
both of the following:
• AC power supplies typically require at least a 15-A or 20-A AC circuit, 100 to 240 VAC, and a
frequency of 50 to 60 Hz.
To prevent loss of input power, ensure the total maximum loads on the circuits
supplying power to the switch are within the current ratings for the wiring and
breakers.
For AC input application, please refer to the statement below:
Cisco Nexus 9332D-H2R NX-OS Mode Switch Hardware Installation Guide
Airflow Considerations
13
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