28.
Enable
full
controller
redundancy
by
making
appropriate
FC
connections
between
controller
B’s
host
ports
and
the
HBA
ports
in
the
servers
that
are
connected
to
controller
A.
You
must
also
install
the
LUN
failover
driver
in
the
host
server.
Note:
If
the
failover
driver
is
already
installed,
you
might
have
to
reconfigure
the
failover
settings,
reboot
the
server,
or
both—depending
upon
which
failover
driver
you
used.
If
you
do
not
install
or
reconfigure
the
failover
driver,
you
will
not
have
controller
redundancy
protection.
29.
In
the
host
server,
reestablish
the
I/O
connections
to
the
mapped
LUNs
by
mounting
the
file
systems
or
adding
drive
letter/mount
points.
Note:
You
may
have
to
reboot
servers
that
use
Microsoft
Windows
operating
systems
to
enable
them
to
recognize
the
drives.
30.
If
this
is
the
Turbo
upgrade
option,
follow
the
Web
activation
instructions
provided
in
the
upgrade
kit
to
activate
the
Storage
Partitioning
Premium
Feature
and
register
the
ability
to
attach
seven
additional
DS4000
EXP
storage
expansion
enclosures.
Upgrading
the
DS4300
Model
60U/60X
from
standard
to
Turbo
option
If
you
have
purchased
the
DS4300
Turbo
option,
you
must
replace
your
existing
256-MB
memory
controllers
to
1-GB
memory
controllers
shipped
as
part
of
the
option.
You
should
perform
this
upgrade
with
the
power
on
as
a
hot-swap.
It
is
also
possible
to
perform
this
procedure
as
a
cold-swap.
Note:
A
controller
hot-swap
replacement
is
when
the
controllers
are
replaced
one
at
a
time
while
the
storage
subsystem
is
powered
on.
Care
must
be
exercised
to
ensure
a
successful
upgrade.
Hot-swap
is
the
preferred
method
for
upgrading
your
controllers.
A
controller
cold-swap
replacement
is
when
both
controllers
are
replaced
at
the
same
time
after
the
storage
subsystem
is
powered
off.
Power
is
turned
back
on
to
the
storage
subsystem
after
the
controllers
are
replaced.
This
section
contains
the
following
procedures:
v
“Steps
for
hot-swap
RAID
controller
upgrade”
v
“Steps
for
cold-swap
RAID
controller
upgrade”
on
page
115
Steps
for
hot-swap
RAID
controller
upgrade
Important:
v
You
cannot
hot-swap
the
RAID
controller
of
a
DS4300
single-controller
storage
subsystem
(Model
6LU/6LX).
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
the
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
This
procedure
must
be
done
when
the
DS4300
system
is
at
a
low
I/O
state.
It
is
preferred
that
no
I/Os
are
made
to
the
DS4300
server
while
the
storage
subsystem
is
being
upgraded.
Chapter
5.
Installing
and
replacing
components
109
Summary of Contents for TotalStorage DS4300 Turbo
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