How to customize server fan table?

Purpose:

Customize the fan table. The speed of system fans will be adjusted according to processor temperature sensors “CPU-TMP“/"CPU0-TMP"/"CPU1-TMP" readings to control the processor area cooling. Furthermore, a default fan table will ensure correct system temperature(s).

Target Audience:

SKY/FWA series servers with Advantech BMC code based firmware, and server runs the firmware which is capable to support this feature.

(please find your Advantech contact for checking whether your firmware supports it or not)

Instruction:

Take SKY-8201 for example, please make sure BMC firmware >= v1.40. (refer https://advantech-ncg.zendesk.com/hc/en-us/articles/360026220311--BMC-quick-start-guide-Section-1-Read-System-Information to check BMC firmware version )

Default values of the table as below.

CPU Temperature (°C)		Fan Duty (%)
T0	45	20
T1	45	20
T2	55	35
T3	65	50
T4	80	75
TR Critical	90	100

Read the table via IPMI commands.

• Get current CPU thresholds.

# ipmitool raw 0x2e 0xa4 0x39 0x28 0x00 0x10
39 28 00 2d 2d 37 41 50 5a

Note: numbers in blue are HEX values

• Get current fan duty.

# ipmitool raw 0x2e 0xa4 0x39 0x28 0x00 0x12
39 28 00 14 14 23 32 4b 64

Note: numbers in green are HEX values

Set the table via IPMI commands, for example.

CPU Temperature (°C)		Fan Duty (%)
T0	45	20
T1	65	35
T2	75	50
T3	85	75
T4	90	100
TR Critical	90	100

• Set CPU temperature

# ipmitool raw 0x2e 0xa4 0x39 0x28 0x00 0x11 45 65 75 85 90 90
 39 28 00

Note: numbers in amber are DEC values

• Set fan duty

# ipmitool raw 0x2e 0xa4 0x39 0x28 0x00 0x13 20 35 50 75 100 100
 39 28 00

Note: numbers in amber are DEC values