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Integrated Dell Remote Access Controller 9 User's Guide

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.
Table 1. Thermal SettingsThis table describes the thermal settings, allowed values, and the commands used for modifying the settings.
Object Description Usage Example
AirExhaustTemp Allows you 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.AirExhaustTemp
The output is:
AirExhaustTemp=70

This output indicates 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.AirExhaustTemp 4
The output is:
Object value modified successfully.

If a system does not support a particular air exhaust temperature limit, then when you run the following command:

racadm set system.thermalsettings.AirExhaustTemp 0

The following error message is displayed:

ERROR: RAC947: Invalid object value specified.

Make sure to specify the value depending on the type of object.

For more information, see RACADM help.

To set the limit to the default value:

racadm set system.thermalsettings.AirExhaustTemp 255
FanSpeedHighOffsetVal
  • Getting this variable reads the fan speed offset value in %PWM for High Fan Speed Offset setting.
  • This value depends on the system.
  • Use FanSpeedOffset object to set this value using index value 1.
Values from 0-100
racadm get system.thermalsettings FanSpeedHighOffsetVal
A numerical value, for example 66, is returned. This value indicates that when you use the following command, it applies a fan speed offset of High (66% PWM) over the baseline fan speed
racadm set system.thermalsettings FanSpeedOffset 1
FanSpeedLowOffsetVal
  • Getting this variable reads the fan speed offset value in %PWM for Low Fan Speed Offset setting.
  • This value depends on the system.
  • Use FanSpeedOffset object to set this value using index value 0.
Values from 0-100
racadm get system.thermalsettings FanSpeedLowOffsetVal
This returns a value such as “23”. This means that when you use the following command, it applies a fan speed offset of Low (23% PWM) over baseline fan speed
racadm set system.thermalsettings FanSpeedOffset 0
FanSpeedMaxOffsetVal
  • Getting this variable reads the fan speed offset value in %PWM for Max Fan Speed Offset setting.
  • This value depends on the system.
  • Use FanSpeedOffset to set this value using index value 3
Values from 0-100
racadm get system.thermalsettings FanSpeedMaxOffsetVal
This returns a value such as “100”. This means that when you use the following command, it applies a fan speed offset of Max (meaning full speed, 100% PWM). Usually, this offset results in fan speed increasing to full speed.
racadm set system.thermalsettings FanSpeedOffset 3
FanSpeedMediumOffsetVal
  • Getting this variable reads the fan speed offset value in %PWM for Medium Fan Speed Offset setting.
  • This value depends on the system.
  • Use FanSpeedOffset object to set this value using index value 2
Values from 0-100
racadm get system.thermalsettings FanSpeedMediumOffsetVal
This returns a value such as “47”. This means that when you use the following command, it applies a fan speed offset of Medium (47% PWM) over baseline fan speed
racadm set system.thermalsettings FanSpeedOffset 2
FanSpeedOffset
  • Using this object with get command displays the existing Fan Speed Offset value.
  • Using this object with set command allows setting the required fan speed offset value.
  • The index value decides the offset that is applied and the FanSpeedLowOffsetVal, FanSpeedMaxOffsetVal, FanSpeedHighOffsetVal, and FanSpeedMediumOffsetVal objects (defined earlier) are the values at which the offsets are applied.
Values are:
  • 0 — Low Fan Speed
  • 1 — High Fan Speed
  • 2 — Medium Fan Speed
  • 3 — Max Fan Speed
  • 255 — None
To view the existing setting:
racadm get system.thermalsettings.FanSpeedOffset

To set the fan speed offset to High value (as defined in FanSpeedHighOffsetVal)

racadm set system.thermalsettings.FanSpeedOffset 1
MFSMaximumLimit Read Maximum limit for MFS

Values from 1 — 100

To display the highest value that can be set using MinimumFanSpeed option:

racadm get system.thermalsettings.MFSMaximumLimit
MFSMinimumLimit Read Minimum limit for MFS

Values from 0 to MFSMaximumLimit

Default is 255 (means None)

To display the lowest value that can be set using MinimumFanSpeed option.

racadm get system.thermalsettings.MFSMinimumLimit
MinimumFanSpeed
  • Allows configuring the Minimum Fan speed that is required for the system to operate.
  • It defines the baseline (floor) value for fan speed and system allows fans to go lower than this defined fan speed value.
  • This value is %PWM value for fan speed.

Values from MFSMinimumLimit to MFSMaximumLimit

When get command reports 255, it means user configured offset is not applied.

To make sure that the system minimum speed does not decrease lower than 45% PWM (45 must be a value between MFSMinimumLimit to MFSMaximumLimit):

racadm set system.thermalsettings.MinimumFanSpeed 45
ThermalProfile
  • Allows you to specify the Thermal Base Algorithm.
  • Allows you to set the system profile as required for thermal behavior associated to the profile.
Values:
  • 0 — Auto
  • 1 — Maximum performance
  • 2 — Minimum Power

To view the existing thermal profile setting:

racadm  get system.thermalsettings.ThermalProfile

To set the thermal profile to Maximum Performance:

racadm set system.thermalsettings.ThermalProfile 1
ThirdPartyPCIFanResponse
  • Thermal overrides for third-party PCI cards.
  • Allows you to disable or enable the default system fan response for detected third-party PCI cards.
  • You can confirm the presence of third-party PCI card by viewing the message ID PCI3018 in the Lifecycle Controller log.
Values:
  • 1 — Enabled
  • 0 — Disabled
NOTE The default value is 1.

To disable any default fan speed response set for a detected third-party PCI card:

racadm set system.thermalsettings.ThirdPartyPCIFanResponse 0

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