I'm using SuperMicro 5018A-MHN4 as my router, fileshare host, virtualization and web server.
Since I monitor it's overall health parameters, such as temperature, it opens a way to advanced server systems control. For example, it's a good idea to slow down the fans while host is cool and speed em up when things got hot.
This is how to control overall policy:
# Show current mode ipmitool raw 0x30 0x45 0x00 # 0x00 - Standard # 0x01 - Full # 0x04 - Heavy I/O # Set new mode ipmitool raw 0x30 0x45 0x01 0x??
Same as you could set via web panel.
And here's a way to tune fans speed deeper:
# 0x00 ~ 2500 RPM # 0x04 ~ 3100 RPM # .. # 0x64 ~ 13200 RPM ipmitool raw 0x30 0x70 0x66 0x01 0x00 0x??
Thanks to this guy's post.