Dell POWEREDGE R710 - Manual (Page 9)

How is this memory write protected? How is the memory cleared?
Control Panel
Internal USB OS control. OS control format.
Internal SD Module Only by SD card write-protect switch. OS control format.
Power Supply
PSU Microcontroller
Protected by the embedded
microcontroller. Special keys are used
by special vendor-provided utilities to
unlock the ROM with various CRC
checks during load.
N/A—not in-system clearable.
PERC 6/i Integrated
PERC NVSRAM
Config Data Storage controller firmware accessed
only.
N/A—not in-system clearable.
PERC Firmware
Write control access by storage
controller firmware.
N/A—not in-system clearable.
PERC Cache RAM
Storage controller firmware accessed
only.
Storage controller firmware clearable only.
Remove AC AND deplete or remove backup
battery.
FRU
Protected in that no iDRAC-
embedded firmware writes to this
device. Although very convoluted,
theoretically, IPMI I2C Master write
commands would flow through to
overwrite this EEPROM.
N/A—not in-system clearable.
IBUTTON Key
EEPROM SHA1 encryption included. Storage
controller use only.
N/A—not in-system clearable.
CPLD Only factory programmable. N/A—not in-system clearable.
SAS 6/iR Integrated
Controller
Configuration Data Write control access by storage
controller firmware.
N/A—not in-system clearable.
FRU
Protected in that no iDRAC-
embedded firmware writes to this
device. Although very convoluted,
theoretically, IPMI I2C Master write
commands would flow through to
overwrite this EEPROM.
N/A—not in-system clearable.