Cisco Nexus 9508 NX-OS Hardware Installation Manual page 24

Planning for Power Requirements
Component
– 32-port 100-Gigabit Ethernet QSFP28 line card (N9K-X9432C-S)
Fan Trays
– (N9K-C9508-FAN)
– (N9K-C9508-FAN2)
Blank Fan Power Card
– (N9K-C9508-FAN-PWR)
The system software reserves, by default, the maximum power required to power-on two Supervisors, two System
Controllers, and three fan trays (generation 1). The total required power budget for the chassis to boot would then be the
sum of the maximum power of all the fabric modules, fan trays, and line cards installed on the chassis. Here are two
examples:
Component
N9K-SUP-B+
N9K-SC-A
N9K-C9508-FM-E2
N9K-C9508-FAN
N9K-X9736C-FX
Total System Power
Component
N9K-SUP-B+
N9K-SC-A
N9K-C9508-FM-G
N9K-C9508-FAN2
N9K-C9508-FAN-PWR
N9K-X9716D-GX
Total System Power
Step 2
Determine the number of power supplies required to power the modules that are installed in the switch by dividing the
module power requirement amount (see Step 1) by the output wattage (3000 W) of the power supplies installed in the
switch. Round up the fractional result to the nearest ones digit.
Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide
14
Quantity
2
2
5
3
4
Quantity
2
2
4
3
2
4
Typical
440 W
176 W
450 W
45 W
Max. Power
80 W
25 W
420 W
250 W
900 W
Max. Power
80 W
25 W
936 W
900 W
90 W
1,680 W
Preparing the Site
Maximum
504 W
250 W
900 W
90 W
Total Power
160 W
50 W
2,100 W
750 W
3,600 W
6,660 W
Total Power
160 W
50 W
3,744 W
2,700 W
180 W
6,720 W
13,554 W