v
If
the
Fault
LED
is
on
or
the
Power
LED
stays
off,
see
the
Storage
Manager
client
for
problem
determination.
For
more
information
about
the
LEDs,
see
Working
with
hot-swap
RAID
controllers
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
and
installation
dates
on
the
top
of
the
controller
unit.
shows
the
location
of
these
items.
For
information
about
the
RAID
controller
cache
memory
and
rechargeable
battery,
see
Replacing
a
RAID
controller
When
instructed
to
do
so
by
the
Storage
Manager
client,
replace
a
RAID
controller
that
has
failed.
Important
The
replacement
RAID
controller
CRU
does
not
come
with
a
RAID
controller
cache
battery
installed,
nor
does
it
come
with
the
mounting
hardware
that
holds
the
battery
in
place
inside
the
RAID
controller.
You
must
remove
the
cache
battery
that
is
inside
the
existing
RAID
controller
that
you
are
replacing,
and
install
that
battery
inside
the
replacement
RAID
controller
CRU,
using
the
battery
unit
mounting
hardware
taken
from
the
existing
controller.
The
steps
to
remove
and
replace
the
battery
are
included
in
the
following
procedure.
Battery-access panel (on bottom)
Levers
Ethernet address label
f10ug034
Figure
63.
RAID
controller
levers
and
labels
Chapter
5.
Installing
and
replacing
components
83
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