Setting The Power Mode; Overview Of Fan Trays - Cisco Nexus 9508 Hardware Installation Manual
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Managing the Switch
Setting the Power Mode
You can configure the power supply mode by using the power redundancy-mode command.
To display the current power supply configuration, use the show environment power command.
Note
Step 1
Use the configure terminal command to enter the global configuration mode.
Example:
switch# configure terminal
switch(config)#
Step 2
Use the power redundancy-mode mode command to specify one of the following power modes:
• For combined mode, include the combined keyword.
• For power supply redundancy mode, include the ps-redundant keyword.
• For input source redundancy mode, include the insrc_redundant keyword.
Example:
switch(config)# power redundancy-mode insrc_redundant
switch(config)#
Overview of Fan Trays
Fan trays provide airflow through the 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
• The fan tray is removed for replacement—The fan tray is designed to be removed and replaced while
• If you remove more than one fan tray at a time, the switch can operate up to three minutes before shutting
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functioning. When a fan fails within a tray, the functioning fans in the module increase their speed to
compensate for the failed fans.
the switch is operating without presenting an electrical hazard or damage to the switch. The switch can
operate for three minutes without the fan tray that you are replacing, but if the switch air-inlet temperature
is less than 86° Fahrenheit (30° C), you have up to 72 hours to replace the fan tray. Because temperatures
can change over time, we recommend that you replace the fan tray within three minutes.
down. To prevent a shutdown, remove only one fan tray at a time.
Cisco Nexus 9508 Switch Site Preparation and Hardware Installation Guide
Setting the Power Mode
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