Special Features; System Health Monitoring; Acpi Features - Supermicro X13DEH User Manual

1.3 Special Features

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

Onboard Voltage Monitors
An onboard voltage monitor will scan the voltages of the onboard chipset, memory, and CPU
continuously. Once a voltage becomes unstable, a warning is given, or an error message is
sent to the screen.
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 BMC.
Environmental Temperature Control
System Health sensors monitor temperatures and voltage settings of onboard processors and
the system in real time via the BMC interface. Whenever the temperature of the CPU or the
system exceeds Supermicro's pre-defined threshold, the system and CPU cooling fan speed
will increase to prevent the CPU or system from overheating.
Note: To avoid possible system overheating, please be sure to provide adequate air-
flow to your system.

1.5 ACPI Features

ACPI stands for Advanced Configuration and Power Interface. The ACPI specification defines
a flexible and abstract hardware interface that provides a standard way to integrate power
management features throughout a computer system, including its hardware, operating
system and application software. This enables the system to automatically turn on and off
peripherals such as network cards, hard disk, and printers.
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Chapter 1: Introduction