
andfaultbehaviors
4x3.5"Backplane
SEPinternalflash Integrated
Flash+EEPROM
No Firmware+FRU
8x2.5"Backplane
SEPinternalflash Integrated
Flash+EEPROM
No Firmware+FRU
Item Howisdatainputtothismemory? Howisthismemorywriteprotected?
Planer
PCHInternalCMOSRAM BIOS N/A– BIOSonlycontrol
BIOSSPIFlash SPIinterfaceviaiDRAC Softwarewriteprotected
iDRACSPIFlash SPIinterfaceviaiDRAC EmbeddediDRACsubsystemfirmware
activelycontrolssubareabasedwrite
protectionasneeded.
BMCEMMC NANDFlashinterfaceviaiDRAC EmbeddedFWwriteprotected
CPUVcoreandVSA
Regulators
Oncevalues areloadedintoregister
spaceacmdwritestonvm.
Therearepasswordsfordifferent
sectionsoftheregisterspace
SystemCPLDRAM Notutilized Notaccessible
SystemMemory SystemOS OSControl
PowerSupplies
PSUFW Differentvendorshavedifferent
utilitiesandtoolstoloadthedata
tomemory.Itcanalsobeloadedby
DellUpdatePackagefromLCorOS
(WindowsandLinux)
Protectedbytheembedded
microcontroller.Specialkeysareused
byspecialvendorprovidedutilitiesto
unlocktheROMwithvarious
CRC
checksduringload.
4x3.5"Backplane
SEPinternalflash I2CinterfaceviaiDRAC Programwriteprotectbit
8x2.5"Backplane
SEPinternalflash I2CinterfaceviaiDRAC Programwriteprotectbit
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