Intel
®
Server System R1000WF Product Family System Integration and Service Guide
93
Appendix C.
System Status LED Operating States and Definition
The server board includes a bi-color System Status LED. The System Status LED on the server board is tied
directly to the System Status LED on the front panel. This LED indicates the current health of the server.
Possible LED states include solid green, blinking green, blinking amber, and solid amber.
When the server is powered down (transitions to the DC-off state or S5), the BMC is still on standby power
and retains the sensor and front panel status LED state established before the power-down event.
When AC power is first applied to the system, the status LED turns solid amber and then immediately
changes to blinking green to indicate that the BMC is booting. If the BMC boot process completes with no
errors, the status LED will change to solid green.
Table 4. System Status LED State Definitions
Color
State
Criticality
Description
Off
System is not
operating
Not ready
System is powered off (AC and/or DC).
System is in EuP Lot6 Off Mode.
System is in S5 Soft-Off State.
Green
Solid on
Ok
Indicates that the System is running (in S0 State) and its status is ‘Healthy’. The
system is not exhibiting any errors. AC power is present and BMC has booted
and manageability functionality is up and running.
After a BMC reset, and in conjunction with the Chassis ID solid ON, the BMC is
booting Linux*. Control has been passed from BMC uBoot to BMC Linux* itself.
It will be in this state for ~10-~20 seconds
Green
~1 Hz blink
Degraded - system
is operating in a
degraded state
although still
functional, or
system is operating
in a redundant state
but with an
impending failure
warning
System degraded:
Redundancy loss such as power-supply or fan. Applies only if the associated
platform sub-system has redundancy capabilities.
Fan warning or failure when the number of fully operational fans is less than
minimum number needed to cool the system.
Non-critical threshold crossed – Temperature (including HSBP temp), voltage,
input power to power supply, output current for main power rail from power
supply and Processor Thermal Control (Therm Ctrl) sensors.
Power supply predictive failure occurred while redundant power supply
configuration was present.
Unable to use all of the installed memory (more than 1 DIMM installed).
Correctable Errors over a threshold and migrating to a spare DIMM (memory
sparing). This indicates that the system no longer has spared DIMMs (a
redundancy lost condition). Corresponding DIMM LED lit.
In mirrored configuration, when memory mirroring takes place and system
loses memory redundancy.
Battery failure.
BMC executing in uBoot. (Indicated by Chassis ID blinking at 3Hz). System in
degraded state (no manageability). BMC uBoot is running but has not
transferred control to BMC Linux*. Server will be in this state 6-8 seconds after
BMC reset while it pulls the Linux* image into flash.
BMC Watchdog has reset the BMC.
