Reference Guide

Item
Non-Volatile
or Volatile
Quantity
Reference Designator
Size
NVSRAM
Non-volatile
2
U1033, U1035
128KB
SDRAM
Volatile
10
U1043-U1047, U1076-U1080
512MB/1GB
Storage Expander
Module
NVSRAM
Non-volatile
1
U22
128KB
Flash ROM
Non-volatile
1
U19
128MB
BP FRU EEPROM
Non-volatile
1
U2
256byte
SEM FRU EEPROM
Non-volatile
1
U7
512byte
Mid-plane Interface Module
FRU EEPOM
Non-volatile
1
U3
4KB
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
(Single 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