Cisco Nexus 7000 Hardware Installation And Reference Manual page 372

Power Specifications for the Cisco Nexus 7000 Series Switches
grid powers half of each power supply (grid A is connected to the Input 1 receptacle on each power
supply and grid B is connected to the Input 2 receptacle on each power supply). The available power
is the amount of power output by the portions of the power supplyies that are connected to the same
grid. For example, if three power supplies are connected to a 110-V grid and a 220-V grid, each
power supply outputs 1.2 kW for the 110-V grid and 3.0 kW for the 220-V grid. The available power
would be 3.6 kW (1.2 kW + 1.2 kW + 1.2 kW) and the reserve power would be 9.0 kW (3.0 kW +
3.0 kW + 3.0 kW).
• Full redundancy mode—Provides both power-supply redundancy and input-source redundancy.
This mode allows you to replace a power supply without interrupting switch operations or continue
powering the switch if one of two grids goes down. The available power is the lesser amount of
output power for power supply redundancy or input source redundancy.
The amount of power available for use with your Cisco Nexus 7000 Series switch depends on the number
of power supplies, input voltage used, and the power mode used. To determine the amount of available
power for the power supplies, see the following tables:
For the 3-kW AC power supplies, see
•
For the 6-kW AC power supplies, see
•
For the 7.5-kW AC power supplies, see
•
For the 3-kW DC power supplies, see
•
For the 6-kW DC power supplies, see
•
Table A-11
Power Inputs
Single input per power supply
220-V input
110-V input
1. The Cisco Nexus 7004 uses up to four 3.0 kW AC power supplies.
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
A-12
Power Availability for 3-kW AC Power Supplies
1
1 power supply
2 power supplies
3 power supplies
4 power supplies
1 power supply
2 power supplies
3 power supplies
4 power supplies
Table A-11
Table A-12 on page A-13
Table A-13 on page A-14
Table A-14 on page A-14
Table A-15 on page A-15
Power
Supply
Combined Redundancy
Mode Mode
3000 W —
6000 W 3000 W
9000 W 6000 W
12,000 W 9000 W
1450 W —
2900 W 1450 W
4350 W 2900 W
5800 W 4350 W
Appendix A Technical Specifications
Input Source Full
Redundancy Redundancy
Mode Mode
— —
3000 W 3000 W
3000 W 3000 W
6000 W 6000 W
— —
1450 W 1450 W
1450 W 1450 W
2900 W 2900 W
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