OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
OU
T
IN
!
2 G
b/s
1 G
b/s
Attention:
When
you
handle
static-sensitive
devices,
take
precautions
to
avoid
damage
from
static
electricity.
For
details
about
handling
static-sensitive
devices,
see
“Handling
static-sensitive
devices”
on
page
41.
4.
Unpack
the
new
power
supply.
5.
Install
the
new
power
supply,
as
shown
in
Figure
45.
Using
the
pull
handle,
push
the
power
supply
into
the
slot
until
it
locks
into
place.
6.
Plug
in
the
power
cord
and
turn
on
the
power
supply
switch.
7.
Check
the
new
power
supply
and
other
DS4400
Storage
Server
indicator
lights
for
faults.
For
more
information,
see
“Checking
the
indicator
lights”
on
page
27.
Small
Form-Factor
Pluggable
(SFP)
Modules
Small
Form-Factor
Pluggable
(SFP)
modules
are
used
to
connect
mini-hub
ports
to
attached
nodes.
An
SFP
module
slides
into
a
mini-hub
port
on
the
back
of
the
DS4400
Storage
Server
and
then
a
host
or
drive-interface
cable
connects
into
the
SFP
module.
For
more
information,
see
“Fibre
Channel
connections”
on
page
4
and
“Mini-hubs”
on
page
63.
Servicing
notes
Consider
the
following
when
servicing
SFP
modules:
v
The
SFP
module
housing
has
an
integral
guide
key
designed
to
prevent
you
from
inserting
the
SFP
module
improperly.
v
Use
minimal
pressure
when
inserting
the
SFP
module
into
a
mini-hub
port.
Forcing
the
SFP
module
into
a
port
could
cause
damage
to
the
SFP
module
or
the
port.
v
You
can
insert
or
remove
the
SFP
module
while
the
storage
server
is
powered
on.
v
The
operational
loop
performance
is
not
affected
when
you
install
or
remove
an
SFP
module.
v
You
must
insert
the
SFP
module
into
a
mini-hub
port
before
you
connect
the
fiber-optic
cable.
v
You
must
remove
the
fiber-optic
cable
from
the
SFP
module
before
you
remove
the
SFP
module
from
the
mini-hub.
Figure
45.
Removing
and
installing
a
power
supply
CRU
58
IBM
TotalStorage
DS4400
Fibre
Channel
Storage
Server:
User’s
Guide
Summary of Contents for TotalStorage DS4400
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