Power Supply Configuration Modes - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Power Supply Configuration Modes

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
Power Supply Configuration Modes
Switches in the MDS 9000 Family have two redundant power supply slots. The power supplies can be
configured in either redundant or combined mode.
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The chassis in the Cisco MDS 9000 Family uses 1200 W when powered at 110 V, and 2500 W when
Note
powered at 220 V.
To configure the power supply mode, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# power redundancy-mode combined
switch(config)#
switch(config)# power redundancy-mode redundant
switch(config)#
Use the show environment power command to view the current power supply configuration.
Note
Power Supply Configuration Guidelines
Follow these guidelines when configuring power supplies:
1.
Cisco MDS 9000 Family Configuration Guide
9-6
Redundant mode—Uses the capacity of one power supply only. This is the default mode. In case of
power supply failure, the entire switch has sufficient power available in the system.
Combined mode—Uses the combined capacity of both power supplies. In case of power supply
failure, the entire switch can be shut down (depends on the power used) causing traffic disruption.
This mode is seldom used, except in cases where the switch has two low power supply capacities
but a higher power usage.
When power supplies with different capacities are installed in the switch, the total power available
differs based on the configured mode, either redundant or combined:
Redundant mode—the total power is the lesser of the two power supply capacities.
a.
For example, suppose you have the following usage figures configured:
Power supply 1 = 2500 W
Additional power supply 2 = not used
Current usage = 2000 W
Current capacity = 2500 W
Then the following three scenarios differ as specified (see
Scenario 1: If 1800 W is added as power supply 2, then power supply 2 is shut down.
Reason: 1800 W is less than the usage of 2000 W.
Scenario 2: If 2200 W is added as power supply 2, then the current capacity decreases to 2200
W.
Reason: 2200 W is the lesser of the two power supplies.
Chapter 9 Managing System Hardware
Purpose
Enters configuration mode.
Configures combined power supply mode.
Reverts to the redundant (default) power
supply mode.
Table 9-1):
OL-6973-03, Cisco MDS SAN-OS Release 2.x