1. iDRAC GUI
2. RACADM
3. UEFI Shell
Witness BIOS updates are handled by the Chassis Manager.
● iDRAC sends package data to the CM
● Chassis Manager writes the data to the Witness SPI ROM
● On completion, boot ROM locations are swapped in Witness BIOS FRU
Figure 32. Witness BIOS update flow
Updating Witness BIOS: DUP (Dell Update Package)
About this task
Witness BIOS DUPs are only supported through the iDRAC GUI or RACADM interfaces. Please follow standard iDRAC and
RACADM procedures for this method.
NOTE: The Witness BIOS update with DUP takes 40 to 80 minutes.
Updating system components
About this task
The Witness MCU supports updates via:
● DUP through only iDRAC or RACADM of a valid compute sled connected to the same CM as the Witness
● Development binaries through only iDRAC or RACADM of a valid compute sled connected to the same CM as the Witness
For MCU recovery methods, see Recovering the Witness manager (MCU).
Witness Manager (MCU) updating is handled by the CM.
38
Initial system setup and configuration
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