Dell PowerEdge R820 - Manual (Page 8)

8
Power Supplies
PSU FW Protected by the embedded
microcontroller. Special keys are used by
special vendor provided utilities to unlock
the ROM with various CRC checks during
load. Not clearable
8x2.5" Backplane
SEP internal flash Program write protect bit Not user clearable
16x2.5" Backplane
Flash memory Hardware strapping Not user clearable
Expander FRU image Hardware strapping Not user clearable
BP FRU image Hardware strapping Not user clearable
PCIe SSD Backplane
SEP internal flash Program write protect bit Not user clearable
H710, H810, H710M PERCs
NVSRAM Not WP. Not visible to Host Processor Cannot be cleared with existing tools available
to the customer
FRU Not WP Cannot be cleared with existing tools available
to the customer
1-Wire EEPROM Not WP. Not visible to Host Processor Cannot be cleared with existing tools available
to the customer
SPD Not WP. Not visible to Host Processor Cannot be cleared with existing tools available
to the customer
SBR Not WP. Not visible to Host Processor Cannot be cleared with existing tools available
to the customer
SPI Flash Not WP. Not visible to Host Processor Cannot be cleared with existing tools available
to the customer
Flash Not WP. Not visible to Host Processor Cannot be cleared with existing tools available
to the customer
ONFI Backup Flash Not WP. Not visible to Host Processor Flash can be cleared by powering up the card
and allowing the controller to flush the
contents to VDs. If the VDs are no longer
available, cache can be cleared by going into
controller bios and selecting Discard Preserved
Cache.