Dell iDRAC8 manual 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	Allows to set the maximum	Set to any of the	To check the existing setting on the
emp	air exhaust temperature limit.	following values	system:
		(based on the	racadm get
		system):
			system.thermalsettings.AirE

•0 - Indicates xhaustTemp 40°C

•	1 - Indicates	The output is:
		AirExhaustTemp=70
	45°C
•	2 - Indicates	This means that the system is set to
	50°C
•	3 - Indicates	limit the air exhaust temperature to
		70°C.
	55°C
•	4 - Indicates	To set the exhaust temperature
	60°C	limit to 60°C:
•	255 - Indicates
		racadm set
	70°C (default)
		system.thermalsettings.AirE
		xhaustTemp 4

56