Reference Guide

Item
Non-
Volatile or
Volatile
Quantity
Reference
Designator
Size of
memory
Type of
memory
(e.g. Flash
PROM,
EEPROM)
Can user programs
or operating
system write data
to it during normal
operation?
What is the
Purpose?
(e.g. boot
code)
How is data
written to
this
memory?
How is
memory write-
protected?
How is memory
cleared?
H730 PERC
Flash
Non-
Volatile
1
U1049
16 MB
Flash
No
Card firmware
Pre-
programmed
before
assembly.
Can be
updated
using Dell/LSI
tools
Not write-
protected. Not
visible to Host
Processor
User cannot clear the
memory.
SBR
Non-
Volatile
1
U1020
8 KB
Serial Boot
ROM
No
Bootloader
Pre-
programme
d before
assembly
Not write-
protected. Not
visible to Host
Processor
User cannot clear the
memory.
SDRAM
Volatile
9
U1043-U1047
4 GB
SDRAM
No
Cache for HDD
I/O
ROC writes
to this
memory -
using it as
cache for
data IO to
HDDs
Not write-
protected. Not
visible to Host
Processor
Cache can be
cleared by powering
off the card
1-Wire
EEPROM
Non-
Volatile
1
U1004
128 B
1-Wire
EEPROM
No
Holds default
controller
properties/setti
ngs
ROC writes
data to this
memory
Not write-
protected. Not
visible to Host
Processor
User cannot clear the
memory.