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Airflow Requirements
• Two 2000-W DC power supplies
Note
Note
To minimize the possibility of circuit failure, make sure that each power-source circuit that is used by the
switch is dedicated to the switch.
Warning
Warning
Note
Airflow Requirements
The switch is positioned with its ports in either the front or the rear of the rack depending on your cabling
and maintenance requirements.
To identify the airflow options for your switch, see the user-replaceable components in the Overview section
of this document.
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:
Cisco Nexus 9364C-GX NX-OS Mode Switch Hardware Installation Guide
8
For 1+1 redundancy, you must use two power sources and connect each power supply to a separate power
source.
Some of the power supply modules have rating capabilities that exceed the switch requirements. When
calculating your power requirements, use the switch requirements to determine the amount of power that is
required for the power supplies.
Statement 1005 Circuit Breaker when using DC power supplies
This product relies on the building's installation for short-circuit (overcurrent) protection.
• Ensure that the protective devices are rated not greater than 70A when the switch is powered with regular
DC power supplies (rated 48-60VDC).
• Ensure that the protective devices are rated not greater than 15A when the switch is powered with HVDC
power supplies (rated 240-380VDC).
Statement 1033 Safety Extra-Low Voltage (SELV)—IEC 60950/ES1–IEC 62368 DC Power Supply
To reduce the risk of electric shock, connect the unit to a DC power source that complies with the SELV
requirements in IEC 60950-based safety standards or ES1 and PS1 requirements in IEC 62368-based safety
standards or to a Class 2 power supply.
We recommend 8-AWG wire for DC installations in the U.S.
Preparing the Site
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