Filter
Top Products
Brocade BigIron RX Series Hardware Installation Guide 83
53-1002483-03
Managing the cooling system
4
You can specify the dynamic-buffer keyword to clear the dynamic buffer or the static-buffer keyword
to clear the static buffer. If you do not specify a buffer, both buffers are cleared.
Managing the cooling system
This section provides configuration, management, and monitoring information about the BigIron RX
Series cooling system.
Configuring the cooling system
The BigIron RX Series switch provides default settings for all cooling system parameters. Therefore,
no initial configuration of the cooling system is necessary. If desired, you can change the settings of
the following cooling system parameters:
• Low and high temperature thresholds for modules and fan speeds
• Interval at which the system polls the temperature sensors on the module for a reading
Changing temperature thresholds for modules and fan speeds
The BigIron RX Series cooling system includes fans that operate at speeds of low, medium,
medium-high, and high. In general, each fan speed, except for low, has a low and high temperature
threshold associated with it as shown in Figure 38. The low fan speed has a high temperature
threshold only.
FIGURE 38 Fan speeds and temperature thresholds
The low and high temperature thresholds enable the BigIron RX Series system77 to determine at
which speed the fans should operate. In general, the fans operate as follows:
• If the temperature of all modules falls between the low and high thresholds for a fan speed, the
fan continues to operate at that fan speed.
• If the temperature of a management module or the switch fabric module or an interface
modules exceeds the high threshold specified for a fan speed, the fan increases its speed to
the next higher speed. On the cards with two sensors, each is monitored individually and if
either exceeds the threshold limits, then the fan will increase. If the temperature of any of
these modules exceeds the high threshold for the high speed for three minutes (the actual
number of polls is determined by the setting of the temp-poll-period command), the system
shuts down the modules to prevent damage. (For information about temp-poll-period
command, refer to “Changing the temperature polling interval” on page 87.)
Operating
Temperature
Medium
Speed
Low Speed
Med-High
Speed
High
Speed
50 55 60 65 70 75 80 85 90 95
High, 60 deg.
Low 57, deg. High, 70 deg.
Low, 67 deg. High, 80 deg.
Low, 77 deg. High, 85 deg.