Full Redundancy
Mode
Input Source
Redundancy
Mode
Power Supply
Redundancy
Mode
Combined ModePower SuppliesPower Inputs
———3,500 W11 input (380 V)
3,500 W3,500 W3,500 W7,000 W2
3,500 W3,500 W7,000 W10,500 W3
7,000 W7,000 W10,500 W14,000 W4
—
——3,500 W11 input (220/240
V)
3,500 W3,500 W3,500 W7,000 W2
3,500 W3,500 W7,000 W10,500 W3
7,000 W7,000 W10,500 W14,000 W4
—
——3,100 W11 input (210 V)
3,100 W3,100 W3,100 W6,200 W2
3,100 W3,100 W6,200 W9,300 W3
6,200 W6,200 W9,300 W12,400 W4
A combination of 3-kW DC and 3.5-kW HVAC/HVDC power supplies can be used.
Note
Overview of Fan Trays
The Cisco Nexus 7706 switch supports two types of fan trays:
• 38 mm Gen 1 Fan Tray (N77-C7706-FAN)
• 76 mm Gen 2 Fan Tray (N77-C7706-FAN-2)—Use this fan tray for Network Equipment Building System
(NEBS) compliance when the Cisco Nexus 7700 M3-Series 12-port 100-Gigabit Ethernet I/O module
(N77-M312CQ-26L) is installed on the switch.
During normal switch operations, all 3 fan trays in a switch should be of the same type.
Note
Fan trays provide airflow through a switch for cooling. Each fan tray contains multiple fans to provide
redundancy. The switch can continue functioning in the following situations:
• One or more fans fail within a fan tray—Even with multiple fan failures, the switch can continue
functioning. When a fan fails within a tray, the functioning fans in the module increase their speed to
compensate for the failed fans. If a fan fails, the failed fan has to be replaced.
Cisco Nexus 7706 Hardware Installation Guide
77OL-31330-01
Managing the Switch
Overview of Fan Trays
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