Example:
switch(config)#
poweroff xbar 1
switch(config)#
Example:
switch(config)#
no poweroff xbar 1
switch(config)#
Power Modes Overview
You can configure one of the following power modes to either use the combined power provided by the
installed power supply units (no power redundancy) or to provide power redundancy when there is a power
loss:
Combined mode
This mode allocates the combined power of all power supplies to active power for switch operations.
This mode does not allocate reserve power for power redundancy in case of power outages or power
supply failures.
Power-supply (n+1) redundancy mode
This mode allocates one power supply as a reserve power supply in case an available power supply fails.
The remaining power supplies are allocated for available power. The reserve power supply must be at
least as powerful as each power supply used for the available power.
Input-source (grid) redundancy mode
This mode allocates half of the power to available power and the other half to reserve power. You must
use a different power source for the active and reserve power sources so that if the power source used
for active power fails, the other power source used for the reserve power can provide power for the
switch.
Full redundancy mode
This mode provides both power-supply (
n
+1) and input-source (grid) redundancies. As happens with the
input-source redundancy mode, this mode allocates half of the power supplies to provide available power
and the other half of the power supplies to provide the reserve power. One of the reserve power supplies
can alternatively be used to provide power if a power supply supplying the available power fails.
Guidelines for Configuring Power Redundancy Modes
The amounts of available and reserve power depend on the power redundancy mode that you specify and the
number of power supplies installed in the switch. For each redundancy mode, consider the following:
Combined mode
The available power equals the combined output of all installed power supplies. There is no reserve
power. You activate this mode by using the
power redundancy-mode combined
command.
Cisco Nexus 7706 Hardware Installation Guide
73
OL-31330-01
Managing the Switch
Power Modes Overview
