Special Features; Pc Health Monitoring - Supermicro X8OBN-F User Manual

X8OBN-F Platform User's Manual
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Special Features

Recovery from AC Power Loss
Basic I/O System (BIOS) provides a setting for you to determine 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 a power-on state.
See the Advanced BIOS Setup section to change this setting. The default setting
is Last State.
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PC Health Monitoring

This section describes the PC health monitoring features of the board. This platform
has fi ve onboard System Hardware Monitor chips that provide PC health monitoring.
An onboard voltage monitor will scan these onboard voltages continuously: CPU
Vcore (up to 8 CPUs), IOH1 Vcore, IOH2 Vcore, 3.3VDD, 3.3VSB, P3V3, P3V3_
AUX, 12V, 5V, Memory Voltage, and Battery Voltage. 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.
Fan Status Monitor with Firmware Control
PC health monitoring in the BIOS can check the RPM status of the cooling fans. The
onboard CPU and chassis fans are controlled by Thermal Management via BIOS
(under the Hardware Monitoring section in the Advanced Setting).
Environmental Temperature Control
The thermal control sensor monitors the CPU temperature in real time and will turn
on the thermal control fan whenever the CPU temperature exceeds a user-defi ned
threshold. The overheat circuitry runs independently from the CPU. Once the ther-
mal sensor detects that the CPU temperature is too high, it will automatically turn
on the thermal fans to prevent the CPU from overheating. The onboard chassis
thermal circuitry can monitor the overall system temperature and alert the user when
the chassis temperature is too high.
Note: To avoid possible system overheating, please be sure to provide
adequate airfl ow to your system.
System Resource Alert
This feature is available when the system is used with SuperDoctor III in the
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