Cisco Nexus 7706 Hardware Installation Manual page 20

Planning for Power Requirements
Table 1: Power Requirements for the Cisco Nexus 7706 Switch Modules
Component
Supervisor Modules
Supervisor 2 Enhanced (N77-SUP2E)
Supervisor 3 Enhanced (N77-SUP3E)
F2 I/O Modules
48-port 1- and 10-Gigabit Ethernet I/O module (N77-F248XP-23E)
F3 I/O Modules
48-port 1- and 10-Gigabit Ethernet I/O module (N77-F348XP-23)
24-port 40-Gigabit Ethernet I/O module (N77-F324FQ-25)
12-port 100-Gigabit Ethernet I/O module (N77-F312CK-26)
M3 I/O Modules
48-port 1- and 10-Gigabit Ethernet I/O module (N77-M348XP-23L)
24-port 40-Gigabit Ethernet I/O module (N77-M324FQ-25L)
12-port 100-Gigabit Ethernet I/O module (N77-M312CQ-26L)
Fabric Module (N77-C7706-FAB-2)
Fabric Module (N77-C7706-FAB-3)
Fan Trays
38 mm Gen 1 Fan Tray (N77-C7706-FAN)
76 mm Gen 2 Fan Tray (N77-C7706-FAN-2)
For example, if you are installing a switch with two Supervisor 2 modules (2 x 265 W), four 48-port 10-Gigabit Ethernet
I/O modules (PID: N77-F248XP-23E) (4 x 500 W), six fabric modules (6 x 150 W) and three fan trays (3 x 600 W), the
power requirements for this switch would be 5230 W.
Note Maximum power values are used for calculating the power requirements.
Step 2
Determine the number of power supplies needed for the available power requirement by dividing the power requirement
amount (see Step 1) by the output wattage of the power supplies installed in the switch.
For example, if you are installing a switch with 3-kW power supplies and have a consumption of 5230 W, you need two
power supplies (5230 W / 3000 W = 1.74 or 2 power supplies) to operate the switch and all of its modules.
Step 3
Select one of the following power modes to determine the number of additional power supplies required for reserve
power:
Cisco Nexus 7706 Hardware Installation Guide
8
Preparing the Site
Quantity Maximum Typical
1 or 2 — —
(same
265 W 137 W
type if
using 2)
150 W 110 W
1 to 4 — —
(can mix
500 W 451 W
types)
— —
480 W 450 W
740 W 650 W
730 W 640 W
— —
560 W 500 W
750 W 700 W
1095 W 800 W
3 to 6 80 W
3 to 6 85 W
— — —
30 W
3 300 W
3 300 W 30 W
6 5
W
6 5
W
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