a.
In
the
Logical/Physical
View
of
the
Subsystem
Management
window,
right-click
any
of
the
logical
drive
tree
node
and
select
Change-->Cache
Settings
.
A
Change
Cache
Settings
window
opens.
b.
Click
Select
All
to
select
all
of
the
logical
drives.
Select
the
appropriate
check
boxes
to
enable
the
read/write
caching
options
that
you
want,
then
click
OK
.
c.
Click
OK
when
the
confirmation
window
opens.
Note:
A
progress
window
shows
the
modification
progress.
After
the
cache
setting
modification
completes,
click
OK
to
close
the
window
and
return
to
the
Subsystem
Management
window.
20.
Verify
firmware
and
NVSRAM.
Reload
the
firmware
and
NVSRAM
to
the
version
shipped
on
the
Turbo
option
CD.
Then,
check
the
IBM
Web
site
for
any
firmware
updates.
Steps
for
cold-swap
RAID
controller
upgrade
Important:
v
You
must
install
the
latest
version
of
Storage
Manager
client
software
in
the
management
workstation
or
in
the
host
server
connected
to
the
DS4300
that
will
be
upgraded
before
you
replace
the
old
controller
with
the
new
controller.
For
more
information,
see
IBM
DS4000
Storage
Manager
Installation
and
Support
Guide
for
your
operating
system,
or
the
following
Web
site:
www-1.ibm.com/servers/storage/support/disk/
v
Schedule
downtime
for
the
upgrade.
v
The
upgrade
should
be
performed
when
the
system
is
in
an
optimal
state.
If
it
is
not,
fix
the
problem
before
attempting
the
upgrade.
Use
the
Storage
Manager
client
to
determine
if
the
system
is
in
an
optimal
state.
v
Save
the
configuration/profile
before
upgrading.
v
If
you
have
premium
features
enabled
in
the
existing
DS4300
storage
server,
ensure
that
you
have
access
to
the
premium
features
key
files
before
you
begin
this
procedure.
You
will
need
to
re-enable
your
premium
features
during
the
procedure.
v
After
the
new
controllers
complete
the
boot
process,
the
WWNN
of
the
DS4300
controllers
will
change.
If
you
have
any
applications
that
rely
on
the
previous
WWNNs,
such
as
FC
switch
zoning
definitions,
you
must
update
the
applications
with
the
new
WWNNs.
Each
RAID
controller
fits
into
the
back
of
the
storage
server
and
has
the
following
components:
v
Battery
v
Cache
memory
v
Two
host
ports
and
one
expansion
port
v
One
Ethernet
port
v
One
serial
port
Each
RAID
controller
has
a
unique
hardware
Ethernet
address,
which
is
printed
on
a
label
on
the
front.
There
is
also
a
label
giving
the
cache
battery
manufacturing
Chapter
5.
Installing
and
replacing
components
69
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