Power Requirements for Switch Modules
To determine the number of power supplies required to operate all the modules in a switch, add together the
maximum power amounts for each module in the switch, divide the sum by 3000 W, and if there is a fractional
amount in the result, add 1 to the result. For n+1 redundancy, add one more power supply. For n+n redundancy,
double the number of power supplies and provision for a second power source.
To determine the typical consumption, add together the typical power amounts for each module in the switch.
If you order new power supplies, make sure that the new power supplies use the same type of power (AC or
DC) as the rest of the power supplies in the same switch. Do not use a mix of AC and DC power sources for
a switch.
MaximumTypicalQuantityComponent
——
1 or 2Supervisor modules
80 W69 WSupervisor A (N9K-SUP-A)
–
50 W39 WSupervisor A+(N9K-SUP-A+)
–
90 W75 WSupervisor B (N9K-SUP-B) (required for -R line cards)
–
58 W47 WSupervisor B+ (N9K-SUP-B+)
–
25 W13 W2System controller modules (N9K-SC-A)
Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide
117
System Specifications
Power Requirements for Switch Modules
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