Dell iDRAC8 Modifying Thermal Settings Using RACADM

–Custom — Enter the percentage value.
The allowable range for minimum fan speed PWM is dynamic based on the system configuration.
The first value is the idle speed and the second value is the configuration max (which may or may
not be 100% based on system configuration).
System fans can run higher than this speed as per thermal requirements of the system but not
lower than the defined minimum speed. For example, setting Minimum Fan Speed at 35% limits
the fan speed to never go lower than 35% PWM.
NOTE: 0% PWM does not indicate fan is off. It is the lowest fan speed that the fan can
achieve.
The settings are persistent, which means that once they are set and applied, they do not
automatically change to the default setting during system reboot, power cycling, iDRAC, or BIOS
updates. A few Dell servers may or may not support some or all of these custom user cooling
options. If the options are not supported, they are not displayed or you cannot provide a custom
value.
3. Click Apply to apply the settings.
The following message is displayed:
It is recommended to reboot the system when a thermal profile change has
been made. This is to ensure all power and thermal settings are activated.
Click Reboot Later or Reboot Now.
NOTE: You must reboot the system for the settings to take effect.
Modifying Thermal Settings Using RACADM
To modify the thermal settings, use the objects in the system.thermalsettings group with the set sub
command as provided in the following table.
Object Description Usage Example
AirExhaustT
emp
Allows to set the maximum
air exhaust temperature limit.
Set to any of the
following values
(based on the
system):
• 0 - Indicates
40°C
• 1 - Indicates
45°C
• 2 - Indicates
50°C
• 3 - Indicates
55°C
• 4 - Indicates
60°C
• 255 - Indicates
70°C (default)
To check the existing setting on the
system:
racadm get
system.thermalsettings.AirE
xhaustTemp
The output is:
AirExhaustTemp=70
This means that the system is set to
limit the air exhaust temperature to
70°C.
To set the exhaust temperature
limit to 60°C:
racadm set
system.thermalsettings.AirE
xhaustTemp 4
56