How to change FWA-6520/FWA-5020/SKY-8200 FAN Speed

Description

1.  FWA-6520 supports  4 FAN Levels , user can modify the LAN speed through following commands, and these commands support FWA-5020, too 

2. There are 3 FAN modules in SKY-8200, a module contains 2 FAN units (6 units in total). User is able to control FAN speed by sending IPMI command to BMC.   

Target Audience

Everyone who is using platforms mentioned in this article.

Commands for FAN Speed Control

Read FAN Level : ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x00

Response : 39 28 00 <smart fan status> <Level>

Set FAN Speed: ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x02 <Level>

Enable Smart FAN: ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x01

By read FAN level command, the 4^thbyte of response means smart FAN status.

01 = smart FAN was Enabled

00 = smart FAN was Disabled 

Examples

LV1 : ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x02 0x01

LV2 : ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x02 0x02

LV3 : ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x02 0x03

LV4 : ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x02 0x04 (Full Speed)

Enable Smart FAN ( Or system power cycle)
# ipmitool raw 0x2e 0x95 0x39 0x28 0x00 0x01