set fan speed-adjust threshold minus
Function
The set fan speed-adjust threshold minus command adjusts the temperature thresholds for fan speed adjustment.
The undo set fan speed-adjust threshold minus command restores the default temperature thresholds for fan speed adjustment.
The default temperature thresholds on different devices are different. You can get to run the display fan speed-adjust threshold minus command.
The following switches do not support this command:
- S2720-EI series: S2720-12TP-EI, S2720-12TP-PWR-EI, S2720-28TP-EI, S2720-28TP-PWR-EI-L
- S5720-LI series: S5720-12TP-LI-AC, S5720-12TP-PWR-LI-AC, S5720-28P-LI-AC, S5720-28TP-LI-AC, S5720-28TP-PWR-LI-AC, S5720-28X-LI-AC, S5720-28X-LI-DC, and S5720-16X-PWH-LI-AC
- S5735-L, S5735S-L, and S5735S-L-M series: S5735-L12T4S-A, S5735-L24T4S-A, S5735S-L24T4S-MA, S5735S-L24FT4S-A, S5735S-L12T4S-A, and S5735S-L24T4S-A
- S5720S-LI series: S5720S-12TP-LI-AC, S5720S-12TP-PWR-LI-AC, S5720S-28P-LI-AC, S5720SV2-28P-LI-AC, S5720S-28TP-PWR-LI-AC, and S5720S-28X-LI-AC
- S5720S-SI series: S5720S-28P-SI-AC, S5720S-28X-SI-AC, and S5720S-28X-SI-DC
- S5720I-SI series: S5720I-6X-PWH-SI-AC, S5720I-10X-PWH-SI-AC, S5720I-12X-SI-AC, and S5720I-12X-PWH-SI-DC
- S5735-S-I series
- S5731-H series, S5731S-H series, S5731-S series, S5731S-S series, S5732-H series
- S6730-H series, S6730S-H series, S6730-S series, S6730S-S series
If one of the preceding switches can set up a stack with other switch models that support this command, this switch also supports this command so that this command can be executed and delivered in the stack.
Format
set fan speed-adjust threshold minus threshold-value [ slot slot-id ]
undo set fan speed-adjust threshold minus [ slot slot-id ]
Parameters
Parameter |
Description |
Value |
|---|---|---|
threshold-value |
Specifies the deduction to the temperature thresholds. |
The value is an integer that ranges from 1 to 20. |
slot slot-id |
Specifies a slot ID. If this parameter is not specified, the thresholds in all slots are set. |
The value depends on the device configuration. |
Usage Guidelines
Usage Scenario
The device uses fixed temperature thresholds to increase and decrease the fan speed by default. The fan speed increases when the device temperature exceeds the upper threshold and decreases when the device temperature falls below the lower threshold. If you want to keep the device working at a lower temperature, you can set deduction for the fixed temperature thresholds. The adjusted temperature threshold is lower than the default temperature threshold.
Precautions
The new thresholds are the fixed temperature thresholds minus threshold-value. After the set fan speed-adjust threshold minus command is executed, the thresholds for increasing and lowering the fan speed decrease.
To view the fixed temperature thresholds, run the display fan speed-adjust threshold minus command.
If a device uses intelligent fan control, this command reduces the temperature thresholds for starting and stopping the fans. Fans in intelligent heat dissipation mode can only start and stop rotating at a fixed speed that cannot be increased or reduced.
- When the device temperature is increased to 45°C from a lower temperature (30°C for example), fans do not rotate because the device temperature does not reach the threshold for starting the fans.
- When the device temperature is reduced to 45°C from a higher temperature (65°C for example), fans keep rotating because the device temperature does not fall below the threshold for stopping the fans.