set fan speed auto min-speed
Function
The set fan speed auto min-speed command configures the minimum fan speed in automatic fan speed adjustment mode.
The undo set fan speed auto min-speed command restores the default minimum fan speed in automatic fan speed adjustment mode.
By default, the minimum fan speed in automatic fan speed adjustment mode is not configured.
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 auto min-speed value [ slot slot-id | all ]
undo set fan speed auto min-speed [ slot slot-id | all ]
Parameters
| Parameter | Description | Value |
|---|---|---|
value |
Sets the percentage of the minimum fan speed. For example, if this parameter is set to 35, the minimum fan speed in automatic fan speed adjustment mode is 35% of the full fan speed. |
The value is an integer that ranges from 1 to 100. |
slot slot-id |
Specifies a slot ID. If this parameter is not specified, the minimum fan speed in automatic fan speed adjustment mode is configured for the fans on the master switch. |
The value depends on the device configuration. |
all |
Specifies all slots. |
- |
Usage Guidelines
Usage Scenario
The fan speed affects the device temperature. When the device temperature is high, increase the fan speed to lower the device temperature. When the device temperature is low, reduce the fan speed to save energy. A proper fan speed ensures stable device operation. By default, fans run in automatic fan speed adjustment mode. In this mode, the system adjusts the fan speed when detecting that the device temperature increases or decreases. To control the fan speed in a timely manner, run the set fan speed auto min-speed command to configure the minimum fan speed in automatic speed adjustment mode.
Precautions
- If the automatically calculated fan speed is lower than the configured minimum speed, the configured minimum speed takes effect. If the automatically calculated fan speed is greater than the configured minimum speed, the calculated fan speed takes effect. To obtain the minimum fan speed of a device, view the Speed Rate Adjusted field in the display fan speed-adjust threshold minus command output.
- To obtain the minimum fan speed in automatic fan speed adjustment mode on a device, view the Auto Min-speed field in the display fan command output.
- The following assumes that the device can set up a stack with other device models and has the minimum fan speed in automatic fan speed adjustment mode configured before the stack is set up. After the stack is set up, if this device functions as the master switch, the configured minimum fan speed still takes effect. If this device functions as the standby or slave switch, the configured minimum fan speed does not take effect.
Example
# Set the minimum fan speed in automatic fan speed adjustment mode to 20% of the full fan speed.
<HUAWEI> system-view [HUAWEI] set fan speed auto min-speed 20 Info: The configuration is successful and takes effect only when the specified value is greater than the value calculated based on the intelligent fan speed adjustment policy.