Reference Guide

Item
Type (e.g. Flash PROM, EEPROM)
Can user
programs or
operating system
write data to it
during normal
operation?
Purpose? (e.g. boot
code)
Storage Controller Module (Dual PERC)
NVSRAM NVSRAM No Configuration data
FRU FRU No
Card manufacturing
information
1-Wire EEPROM 1-Wire EEPROM No
Holds default
controller
properties/settings
SPD SPD No
Memory
configuration data
SBR SBR No Bootloader
Flash Flash No Card firmware
ONFI Backup Flash ONFI Backup Flash No
Holds cache data
during power loss
SDRAM SDRAM No Cache for HDD I/O
NVSRAM NVSRAM No Configuration data
Mid-plane Interface Module
FRU EEPOM EEPROM No
MIM FRU
Configuration data
Storage Expander Module
NVSRAM NVSRAM No
Expander
Configuration data
Flash ROM Flash ROM Yes
Boot code+ system
fw
BP FRU EEPROM EEPROM No
BP FRU
Configuration data
SEM FRU EEPROM EEPROM No
SEM FRU
Configuration data