Penguin Computing Relion 1900e - NMI (Diagnostic Interrupt) Sensor; LAN Leash Event Monitoring; Add-In Module Presence Sensor

Relion 1900e/2900e Manual
79 Revision 1.3
Component
Owner
Color
State
Description
Fan Fault LED BMC
Amber Solid On
Fan failed
Amber
Off
Fan working correctly
DIMM Fault LED BMC
Amber
Solid On
Memory failure – detected by BIOS
Amber
Off
DIMM working correctly
HDD Fault LED
HSBP
PSoC*
Amber
On
HDD Fault
Amber
Blink
Predictive failure, rebuild, identify
Amber
Off
Ok (no errors)
CPU Fault LEDs BMC
Amber
off
Ok (no errors)
Amber
on
MSID mismatch.
• Fan f
ault LEDs – A fan fault LED is associated with each fan. The BMC lights a fan fault LED if the
associated fan-tach sensor has a lower critical threshold event status asserted. Fan-tach sensors
are manual re-arm sensors. Once the lower critical threshold is crossed, the LED remains lit until
the sensor is rearmed. These sensors are rearmed at system DC power-on and system reset.
• DIMM fault LEDs – The BMC owns the hardware control for these LEDs. The LEDs reflect the state
of BIOS-owned event-only sensors. When the BIOS detects a DIMM fault condition, it sends an
IPMI OEM command (Set Fault Indication) to the BMC to instruct the BMC to turn on the
associated DIMM Fault LED. These LEDs are only active when the system is in the ‘on’ state. The
BMC will not activate or change the state of the LEDs unless instructed by the BIOS.
• Hard Disk Drive Status LEDs – The HSBP PSoC* owns the HW control for these LEDs and
detection of the fault/status conditions that the LEDs reflect.
• CPU Fault LEDs. The BMC owns control for these LEDs. An LED is lit if there is an MSID mismatch
(that is, CPU power rating is incompatible with the board)
7.3.18 NMI (Diagnostic Interrupt) Sensor
The BMC supports an NMI sensor for logging an event when a diagnostic interrupt is generated for the
following cases:
• The front panel NMI (diagnostic interrupt) button is pressed
• The BMC receives an IPMI command Chassis Control command that requests this action
Note that the BMC may also generate this interrupt due to an IPMI Watchdog Timer pre-timeout interrupt;
however an event for this occurrence is already logged against the Watchdog Timer sensor so it will not log
an NMI sensor event.
7.3.19 LAN Leash Event Monitoring
The Physical Security sensor is used to monitor the LAN link and chassis intrusion status. This is
implemented as a LAN Leash offset in this discrete sensor. This sensor monitors the link state of the two
BMC embedded LAN channels. It does not monitor the state of any optional NICs.
The LA
N Leash Lost offset asserts when one of the two BMC LAN channels loses a previously established
link. It de-asserts when at least one LAN channel has a new link established after the previous assertion. No
action is taken if a link has never been established.
LAN L
eash events do not affect the front panel system status LED.
7.3.20 Add-in Module Presence Sensor
Some server boards provide dedicated slots for add-in modules/boards (for example, SAS, IO, PCIe*-riser).
For these boards the BMC provides an individual presence sensor to indicate if the module/board is
installed.