Supermicro X7DB3, Руководство пользователя

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1-10
X7DB3 User's Manual
1-3 Special Features
Recovery from AC Power Loss
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 hit the power switch to turn it back
on), or for it to automatically return to power-on state, or you can also choose for
it to automatically return to the last state prior to power loss. See the Power Lost
Control setting in the Advanced BIOS Setup section (Boot Features) to change
this setting.
1-4 PC Health Monitoring
This section describes the PC health monitoring features of the X7DB3. All have
an onboard System Hardware Monitor chip that supports PC health monitoring.
An
onboard voltage monitor will scan the following voltages continuously: +1.5V,+1.8V,
+3.3V, +5V, +12V,
− 12V, +3.3V Standby, and +5V standby. Once a voltage becomes
unstable, a warning is given or an error message is sent to the screen. Users can
adjust the voltage thresholds to de
fi ne the sensitivity of the voltage monitor.
Fan Status Monitor with Firmware Control
The PC health monitor 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 BIOS Setup section.)
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-de
fi ned
threshold. The overheat circuitry runs independently from the CPU. Once it detects
that the CPU temperature is too high, it will automatically turn on the thermal fan
control to prevent any overheat damage to the CPU. The onboard chassis thermal
circuitry can monitor the overall system temperature and alert users when the chas-
sis temperature is too high.
CPU Fan Auto-Off in Sleep Mode
The CPU fan activates when the power is turned on. It continues to operate when
the system enters Standby mode. When in sleep mode, the CPU will not run at full
power, thereby generating less heat.