Frequently Asked Questions

How to modify the mainboard/system fan control?

Environment: Windows/Linux/DOS mode

Tool: ipmitool (search & download from Internet)

Interface:
i. BIOS SETUP (mostly for BMC AST2400 series)
ii. IPMI webUI (mostly for BMC AST2500 series)
iii. IPMITOOL command (for barebone/system)

Attn: We DO NOT RECOMMEND that user adjust the fan table due to the system has been fine-tuned from the ASRockRack thermal team.

i. BIOS SETUP(mostly for BMC AST2400 series)

Setting directory:

BIOS SETUP screen→Advanced→H/W Monitor→[Smart Fan Control] or [Fan Control]

ii. IPMI webUI (for BMC AST2500 series)

Setting directory:

IPMI webUI→Settings →[FAN Settings]

iii. IPMITOOL command (for barebone/system)

Manual Full speed
ipmitool raw 0x3a 0x01 0x64 0x64 0x64 0x64 0x64 0x64 0x64 0x64

Manual Half speed
ipmitool raw 0x3a 0x01 0x32 0x32 0x32 0x32 0x32 0x32 0x32 0x32

Auto fan control
ipmitool raw 0x3a 0x01 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0

Get fan duty
ipmitool raw 0x3a 0x06 0x01(Fan duty) 0x00(flag)
Ex: ipmitool raw 0x3a 0x06 0x01 0x00

Set fan duty
ipmitool raw 0x3a 0x05 0x01(Fan duty) 0x00( flag) 30 55 60 65 70 75 80 85 90 95 100(Fan duty)
Ex: ipmitool raw 0x3a 0x05 0x01 0x00 30 55 60 65 70 75 80 85 90 95 100

Get Temp table
ipmitool raw 0x3a 0x06 0x02(Temp) 0x00( flag)
Ex: ipmitool raw 0x3a 0x06 0x02 0x00

Set Temp table
ipmitool raw 0x3a 0x05 0x02(Temp) 0x00(flag) 45 50 55 60 65 70 74 78 82 86 90(Temp table)
Ex: ipmitool raw 0x3a 0x05 0x02 0x00 45 50 55 60 65 70 74 78 82 86 90

Note:
if by local --> ipmitool raw 0x3a 0x06 0x01 0x00
if by win OS local --> ipmitool -I ms raw 0x3a 0x06 0x01 0x00
if by remote --> ipmitool -H -U admin -P admin raw 0x3a 0x06 0x01 0x00

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