Cisco Nexus 7004, Руководство по установке и справочное руководство по оборудованию

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8-10
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-06
Appendix 8 Managing the Switch Hardware
Power Supply Configuration Modes
Xb3 xbar N/A 150 W Absent
Xb4 xbar N/A 150 W Absent
Xb5 xbar N/A 150 W Absent
fan1 N7K-C7018-FAN 213 W 578 W Powered-Up
fan2 N7K-C7018-FAN 148 W 422 W Powered-Up
N/A - Per module power not available
Power Usage Summary:
--------------------
Power Supply redundancy mode (configured) PS-Redundant
Power Supply redundancy mode (operational) Non-Redundant
Total Power Capacity (based on configured mode) 9000 W
Total Power of all Inputs (cumulative) 9000 W
Total Power Output (actual draw) 1856 W
Total Power Allocated (budget) 4245 W
Total Power Available for additional modules 4755 W
switch#
Power Supply Configuration Modes
This section includes the following topics:
• Power Supply Configuration Overview, page 8-10
•
Power Supply Configuration Guidelines, page 8-12
Power Supply Configuration Overview
You can configure one of the following power modes to either use the combined power provided by the
installed power supply units or to provide power redundancy when there is a power loss:
•
Combined mode—Provides the maximum amount of available power by utilizing the combined
power output from all installed power supply units for switch operations. This mode does not
provide redundancy.
• Power-supply redundancy mode—Allows you to replace a power supply during switch operations.
All power supplies are active. The available power is calculated as the least amount of power
available from all but one of the power supply units (N+1). The reserve power is the amount of
power output by the power supply unit that can output the most power. For example, if three power
supply units output 3 kW, 6 kW, and 6 kW, the available power is 9 kW (3 kW + 6 kW) and the
reserve power is 6 kW.
•
Input source redundancy mode—Takes power from two electrical grids so that if one grid goes
down, the other grid can provide the power needed by the switch. For the Cisco Nexus 7004 chassis,
each grid powers half of the power supplies. For the Cisco Nexus 7009, 7010, and 7018 chassis, each
grid powers half of each power supply unit (grid A is connected to the Input 1 receptacle on each
power supply unit and grid B is connected to the Input 2 receptacle on each power supply unit). The
available power is the amount of power output by the portions of the power supply units that are
connected to the same grid. For example, if three power supply units 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).