System Health Monitoring - Supermicro X11DDW-L User Manual

Recovery from AC Power Loss
The Basic I/O System (BIOS) provides a setting that determines how the system will respond
when AC power is lost and then restored to the system. You can choose for the system to
remain powered off (in which case you must press the power switch to turn it back on), or
for it to automatically return to the power-on state. See the Advanced BIOS Setup section
for this setting. The default setting is Last State.

1.4 System Health Monitoring

This section describes the health monitoring features of the X11DDW-L/NT motherboard.
The motherboard has an onboard Baseboard Management Controller (AST 2500) chip that
supports system health monitoring. Once a voltage becomes unstable, a warning is given or
an error message is sent to the screen. The user can adjust the voltage thresholds to defi ne
the sensitivity of the voltage monitor.
Onboard Voltage Monitors
The onboard voltage monitor will continuously scan crucial voltage levels. Once a voltage
becomes unstable, it will give a warning or send an error message to the screen. The user
can adjust the voltage thresholds to defi ne the sensitivity of the voltage monitor. Real time
readings of these voltage levels are all displayed in IPMI 2.0.
Fan Status Monitor with Firmware Control
The system health monitor embedded in the BMC chip can check the RPM status of the
cooling fans. The CPU and chassis fans are controlled via lPMI.
Environmental Temperature Control
System Health sensors in the BMC monitor the temperatures and voltage settings of onboard
processors and the system in real time via the IPMI interface. Whenever the temperature of
the CPU or the system exceeds a user-defi ned threshold, system/CPU cooling fans will be
turned on to prevent the CPU or the system from overheating.
Note: To avoid possible system overheating, please be sure to provide adequate air-
fl ow to your system.
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Chapter 1: Introduction