v
Route
the
cable
away
from
places
where
it
can
be
snagged
by
other
devices
in
the
rack.
v
Do
not
overtighten
the
cable
straps
or
bend
the
cables
to
a
radius
of
less
than
38
mm
(1.5
in.).
v
Do
not
put
excess
weight
on
the
cable
at
the
connection
point.
Be
sure
that
the
cable
is
well
supported.
Installing
SFP
modules
The
DS4300
Storage
Server
host
ports
require
SFP
Modules.
SFP
modules
are
used
to
convert
electrical
signals
to
optical
signals
that
are
required
for
Fibre
Channel
transmission
to
and
from
RAID
controllers.
The
DS4300
Storage
Server
supports
two
types
of
SFP
modules;
one
with
a
plastic
pull-tab
latch
and
one
with
a
metal
or
plastic
wire
latch.
After
you
install
the
SFP
modules,
you
will
use
fiber-optic
cables
to
connect
the
DS4300
Storage
Server
to
other
Fibre
Channel
devices.
Before
you
install
SFP
modules
and
fiber-optic
cables,
read
the
following
information:
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
you
insert
the
SFP
module
into
a
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
port
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
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
port.
See
“Removing
SFP
modules”
on
page
36
for
more
information.
v
Do
not
mix
long-wave
SFPs
and
short-wave
SFPs
on
a
single
storage
server.
Use
either
long-wave
SFPs
or
short-wave
SFPs.
You
can
use
the
DS4000
Storage
Manager
client
to
view
the
Storage
Subsystem
Profile
in
order
to
verify
that
you
are
not
mixing
long-wave
and
short-wave
SFPs.
To
install
an
SFP
module,
complete
the
following
steps.
Statement
3:
34
IBM
TotalStorage
DS4300
Fibre
Channel
Storage
Server:
Installation
and
User’s
Guide
Содержание TotalStorage DS4300 Turbo
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