Specification Update

Monthly Specification Update Enterprise Platforms and Services Marketing
13
15. Fan 5 may report a reading of 0 RPM after BMC is updated
Problem After a BMC update, Fan 5 may not return an accurate reading until AC power
is cycled.
Implication Intel
®
Server Management Software and other software may display a reading
of 0 RPM for this sensor. The BMC may respond as though this fan had failed
and fan redundancy was lost. This would cause the system fault LED and fan
status LED to indicate a failure for this sensor, and the fans will run in a high
speed boost state.
Status This erratum may be fixed in a future firmware revision.
Workaround AC cycle the system again and the system should run normally.
16. BMC may not respond to the IPMI command, Send Message sent via LAN
Problem The BMC may not respond correctly to a Send Message command from the
LAN channel to the IPMB channel. This issue only affects an IPMI 2.0 based
RMCP+ session—not an IPMI 1.5 based RMCP session.
Implication Remote IPMI over LAN software cannot forward commands to the IPMB bus.
Status This erratum was fixed in BMC firmware revision 50.
Workaround Software developers should use IPMI 1.5 based sessions to bridge commands
to the IPMB channel.
17. Fans may take a long time to slow down after fan boosting
Problem System fans that boost (due to an increased processor temperature) may not
return to normal speed immadiately after the processor temperature returns to
normal.
Implication If the system fans boost due to a high processor temperature, the BMC will not
restore the fans to a normal speed for a similar amount of time as they spent in
a boosted state. For example, if a high processor temperature caused the fans
to boost for 5 minutes, the fans would not return to normal for 5 minutes after
the processor temperature returned to normal.
Status This erratum may be fixed in a future firmware revision
Workaround The fans will return to normal on their own over time.