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6-24
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-18634-01
Chapter 6 Managing the Device Hardware
Information About Fan Trays
DETAILED STEPS
Information About Fan TraysHot-swappable fan trays are provided in all devices in the Cisc o Nexu s 7000 Se ries t o ma nage a irflo w
and cooling for the entire device. Each fan tray contains multiple fans to provid e redundancy. The device
can continue functioning in the following situations:
• One or more fans fail within a fan tray—Even with multiple fan failures, the Cisco Nexus 7000
Series device can continue functioning. When a fan fails within a tray, the functioning fans in the
module increase their speed to compensate for the failed fans.
• The fan tray is removed for replacement—The fan tra y is designed to be removed and replaced while
the system is operating without presenting an electrical hazard or damage to the system. When
replacing a failed fan tray in a running system, be sure to promptly replace the fan tray.
Tip If one or more fans fail within a fan tray, the Fan Status LED turns red. A fan failure could lead to
temperature alarms if not corrected immediately.
The fan status is continuously monitored by the software. I n case of a f a n fai lur e, t hese a ctio ns o ccur :
• System messages are displayed.
• Call Home alerts are sent (if configured).
• SNMP notifications are sent (if configured).
Use the show environment fan command to display the fan module status (see Example 6-8).
Example 6-8 Dis plays Chassis Fan Information
switch# show environment fan
------------------------------------------------------
Fan Model Hw Status
------------------------------------------------------
Chassis DS-9SLOT-FAN 1.2 ok
PS-1 -- -- ok
PS-2 -- -- absent
Command Purpose
Step 1 config t
Example:
switch# config t
switch(config)#
Enters configuration mode.
Step 2 poweroff module
slot_number
Example:
switch(config)# poweroff module 1
switch(config)#
Powers off the specified module (fabric module 1) in the
device.
no poweroff module
slot_number
Example:
switch(config)# no poweroff module 1
switch(config)#
Powers up the specified module (fabric module 1) in the
device.