Dell PowerEdge XR4000w - Witness Power Button LED Behavior; Witness Power Operations: Idrac; Witness Server Power Status Is Identified in GUI

Witness power button LED behavior
About this task
The Witness power LED is a bi-color LED consisting of AMBER and GREEN. The LED communicates Witness status during both
runtime and BIOS updates.
Witness power LED during runtime behavior is shown in the below table.
Table 14. Witness power button LED behavior
State Amber Green
BIOS no POST or failure Blink @1hz OFF
POST Progressing OFF Blink @1hz
BIOS POST complete OFF ON
S5 power state OFF OFF
During Witness BIOS updating, the Chassis Manager sets a “WM SPI image updating” bit in register map. This sets the Witness
LED behavior as:
● Amber ON one second, Green OFF
● Green ON one second, Amber OFF
Once the CM clears the “WM SPI image updating bit” normal Witness LED runtime behavior resumes.
Witness power operations: iDRAC
About this task
iDRAC supports the following Witness operations:
● Power Off/On
● Hard Reset
● Power Cycle (Reseat Node)
These can be performed through iDRAC interfaces mentioned below:
● iDRAC GUI
● Redfish
● RACADM
● CPLD
Witness server power status is identified in GUI:
About this task
The iDRAC GUI Witness Page displays can be used to view Witness power items and manipulate witness power.
Witness server power status is identified in GUI:
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Initial system setup and configuration