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.   

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