Brocade Communications Systems FastIron SuperX User Manual

Brocade FastIron X Series Chassis Hardware Installation Guide 93
53-1001723-02
Managing the cooling system
4
Table 21 outlines the default low and high temperature thresholds for each fan speed, as well as
the operating level and noise level of the fans at each fan speed.
For information about checking the current settings of the low and high temperature thresholds for
modules and fan speeds, refer to “Displaying temperature thresholds for thermal planes and fan
speeds” on page 94.
Command syntax
If desired, you can change the default low and high temperature thresholds for a particular thermal
plane and fan speed. For example, to change the low and high thresholds of the medium fan speed
for the management module or modules to 56 C and 72 C, respectively, enter the following
command at the global CONFIG level of the CLI.
FastIron(config)# fan-threshold mp speed-3 56 72
Syntax: fan-threshold <module> [speed-1 <high-threshold>] [speed-2 <low-threshold>
<high-threshold>] [speed-3 <low-threshold> <high-threshold>] [speed-4 <low-threshold>
<high-threshold>]
For the <module> parameter, specify one of the following:
• lp – Changes low and high temperature thresholds for the Interface modules.
• mp – Changes low and high temperature thresholds for the management module.
• sfp – (FSX 800 and FSX 1600 only) Changes low and high temperature thresholds for the
switch fabric modules.
The fan speeds are as follows:
• speed-1 – low
• speed-2 – medium-low
• speed-3 – medium
• speed-4 – high (shutdown temperature)
For the <low-threshold> and <high-threshold> variables, you can specify any temperature in
Centigrade. However, when changing low and high temperature thresholds for a module’s fan
speeds, remember that the low temperature threshold of a higher fan speed must be lower than
the high temperature threshold of the lower fan speed. Brocade establishes this guideline to
ensure the fan speed stability.
For example, if you are changing the temperature thresholds for the management module’s high
and medium-high fans speeds, the Brocade device will accept the following values because the low
temperature threshold for the high speed (67 C) is lower than the high temperature threshold (72
C) for the medium-high speed.
TABLE 21 Default low and high temperature thresholds for thermal planes
and fan speeds
Fan Speed Description Low Temperature
Threshold
High Temperature
Threshold
Fan Operating Level
(% of Capacity)
Fan Noise Level
4High 50 C80 C 100 78 dB
3Medium49 C59C 50 66 dB
2Medium-low48 C58C 37 63 dB
1Low N/A 57 C 25 56 dB

Brocade Communications Systems FastIron SuperX Specifications

General

Brand	Brocade Communications Systems
Model	FastIron SuperX
Category	Switch
Language	English