Displaying Module Temperature; About Fan Modules - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

Chapter 18 Managing System Hardware
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
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Displaying Module Temperature

Expand Switches and then select Hardware in the Physical Attributes pane in Fabric Manager. Click
the Temperature Sensors tab in the Information pane to display temperature sensors for each module
(see the second example under

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
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temperature alarms if not corrected immediately.
The fan status is continuously monitored by the Cisco MDS SAN-OS software. In case of a fan failure,
the following action is taken:
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•
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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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OL-16184-01, Cisco MDS SAN-OS Release 3.x
If the threshold is exceeded in an active supervisor module with HA-standby or standby present,
only that supervisor module is shut down and the standby supervisor module takes over.
If you do not have a standby supervisor module in your switch, you have an interval of 2 minutes
to decrease the temperature. During this interval the software monitors the temperature every
five (5) seconds and continuously sends system messages as configured.
To realize the benefits of these built-in, automatic sensors on any switch in the Cisco MDS 9500
Series, we highly recommend that you install dual supervisor modules. If you are using a Cisco
MDS 9000 Family switch without dual supervisor modules, we recommend that you
immediately replace the fan module if even one fan is not working.
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.
Power Supply Configuration
Cisco MDS 9000 Family CLI Configuration Guide
About Fan Modules
Modes).
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