FastIron Hardware Installation Guide for the FSX, FSX 800, and FSX 1600
5 - 14
© 2008 Foundry Networks, Inc.
December 2008
For example, if you are changing the temperature thresholds for the management module’s high and medium-high
fans speeds, the Foundry 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.
However, the Foundry device will not accept the following values because the low temperature threshold for the
high speed (73
°
C) is higher than the high temperature threshold (72
°
C) for the medium-high speed.
Changing Temperature Thresholds For Thermal Planes and Fan Speeds (Releases 03.0.00 and
Later)
NOTE:
This section applies to software releases 03.0.00 and later. For releases prior to 03.0.00, see “Changing
The cooling system in the FSX and FSX 800 include six four-speed fans. The fans operate at speeds of low,
medium-low, medium, and high. In general, each fan speed, except for low, has a low and high temperature
threshold associated with it as shown in Figure 5.1. The low fan speed has a high temperature threshold only.
Fan Speed
Low Temperature
Threshold
High Temperature
Threshold
High
67
°
C
82
°
C
Medium-high
57
°
C
72
°
C
Fan Speed
Low Temperature
Threshold
High Temperature
Threshold
High
73
°
C
82
°
C
Medium-high
57
°
C
72
°
C
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