Dell PowerEdge R910 Technical Manual page 57

Dell
How is data input to this memory?
How is this memory write protected?
Remarks
Server (16-drive SAS only) Backplane SAS Expander EEPROM
Size:
Type [Flash PROM, EEPROM]:
Can user programs or operating system write
data to it during normal operation?
Does it retain data when powered off?
Purpose? [boot code]
How is data input to this memory?
How is this memory write protected?
Remarks
Power Supply Firmware and FRU (Field Replacement Unit) Memory
Size:
Type [Flash PROM, EEPROM]:
Can user programs or operating system write
data to it during normal operation?
Does it retain data when powered off?
Purpose? [boot code]
How is data input to this memory?
How is this memory write protected?
Remarks
Dell PowerEdge R910 Technical Guide
Loading flash memory requires a vendor-
provided firmware file and loader program
which is executed by booting up the system
from a floppy or OS-based executable
containing the firmware file and the loader.
System loaded with arbitrary data in firmware
memory would not operate.
Software write protected
There is quantity of "1" PSoC device on the 4-
drive backplane versus "2" on the 16-drive
backplane.
4MB
Flash EEPROM
No
Yes
Store SAS expander firmware and configuration
data
Data pre-programmed or update using Dell
utility which is a DOS-based executable
containing the firmware file and loader.
Software write protected
Ensure that SAS x16 BP cables are attached to
planar prior to update. After update, the
system should be AC cycled before update takes
effect.
1100W LiteOn: 4KB FLASH with 256 Bytes RAM
1100W/750W Emerson: 8K and 16K FLASH with
384 and 1024 Bytes RAM respectively
750W Delta: Flash ROM size 48K bytes and
EEPROM size 1K bytes
FLASH, EEPROM
No
Yes
Stores PSU controller firmware. FRU information
for boards such as name, manufacturing date
etc.
FRU and firmware data pre-programmed by the
PSU vendors. PSU firmware can be updated by
Dell provided update package.
Software write protected
The number of these devices depends on the
number of PSUs installed.
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