Dell External OEMR R910 Technical Manual page 75

Dell
How is data input to this memory?
How is this memory write protected?
Remarks
Dell PERC H200i storage controller Flash/NVSRAM/FRU (if applicable)
Size:
Type [e.g., Flash PROM, EEPROM]:
Can user programs or operating system write
data to it during normal operation?
Does it retain data when powered off?
Purpose? [e.g., boot code]
How is data input to this memory?
How is this memory write protected?
Remarks
Server (4- or 16-drive SAS) Backplane Storage Controller Memory
Size:
Type [e.g., Flash PROM, EEPROM]:
Can user programs or operating system write
data to it during normal operation?
Does it retain data when powered off?
Purpose? [e.g., boot code]
Dell PowerEdge R910 Technical Guide
enabled in the case of a power loss.
FRU/CPLD data is preprogrammed at board
build.
NVSRAM is updated by the storage controller
Flash is updated by Dell provided update
package
Cache stores the data before getting written to
the disks when WriteBack policy is enabled with
battery backup.
FRU is not write protected but other
components detailed above in the Size row are
software write protected.
PERC H700i controller is optional
FRU: 256 Bytes
Boot ROM: 8 KB
Flash: 8 MB
NVSRAM: 128 KB
Flash (NOR), EEPROM and NVSRAM
No
Yes
Flash stores the storage controllers firmware
NVSRAM stores the controller configuration
FRU stores the PPID, manufacturing date etc.
FRU data is preprogrammed at board build.
NVSRAM is updated by the storage controller
Flash is updated by Dell provided update
package
FRU is not write protected but everything else is
software write protected
PERC H200i controller is optional
32KB
Embedded Microcontroller Flash
No
Yes
Stores the server storage backplane FW and FRU
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