About Fan Modules - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

About Fan Modules

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
About Fan Modules
Hot-swappable fan modules (fan trays) are provided in all switches in the Cisco MDS 9000 Family to
manage airflow and cooling for the entire switch. Each fan module contains multiple fans to provide
redundancy. The switch can continue functioning in the following situations:
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If one or more fans fail within a fan module, the Fan Status LED turns red. A fan failure could lead to
Tip
temperature alarms if not corrected immediately.
The fan status is continuously monitored by the Cisco MDS NX-OS software. In case of a fan failure,
the following action is taken:
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To display the fan module status, from Device Manager, choose Physical > Fans. The dialog box
displays the fan status.
The possible Status field values for a fan module on the Cisco MDS 9500 Series switches are as follows:
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On the Cisco MDS 9513 Director, the front fan module has 15 fans.
Figure 18-6
Cisco MDS 9000 Family Fabric Manager Configuration Guide
18-12
One or more fans fail within a fan module—Even with multiple fan failures, switches in the Cisco
MDS 9000 Family can continue functioning. When a fan fails within a module, the functioning fans
in the module increase their speed to compensate for the failed fan(s).
The fan module is removed for replacement—The fan module 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 module in a running switch, be sure to replace the new fan
module within five minutes.
System messages are displayed.
Call Home alerts are sent (if configured).
SNMP notifications are sent (if configured).
If the fan module is operating properly, the status is ok.
If the fan is physically absent, the status is absent.
If the fan is physically present but not working properly, the status is failure.
shows the numbering of the fans in the front fan module on the Cisco MDS 9513 Director.
Chapter 18 Managing System Hardware
OL-17256-03, Cisco MDS NX-OS Release 4.x