Dell External OEMR R910 Technical Manual page 77

Dell
Dell Internal Dual SD Module (IDSM) microcontroller flash (if present)
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
Dell Internal Dual SD Module (IDSM) write journal flash (if present)
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
SD card(s) (if present) for IDSM (one or two SD cards depending on the redundancy mode
ordered with it)
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
Dell PowerEdge R910 Technical Guide
number of PSUs installed.
256 KB
EEPROM
No
Yes
Store firmware for IDSM functionality
Loading flash memory requires a vendor-
provided firmware file and loader program.
IDSDM module loaded with arbitrary data in
firmware memory would not operate.
Software write protected
IDSM is an option
8 MB
EEPROM
No
Yes
Store write journal for shutdown recovery
IDSM microcontroller writes to and read from
these memory via SPI interface during
operation.
Software write protected
IDSM is an option
Multiple (1GB, 2GB, 8GB)
Secure Digital NAND Flash
No
Yes
Normal usage is embedded Hypervisor OS but
not limited
Factory load, OS run time usage and OS updates
and configuration changes.
Media-write protection or software-write
protected
IDSM is an option
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