Handling
fiber-optic
cables
Before
using
fiber-optic
cables,
read
the
following
precautions.
Attention:
To
avoid
damage
to
the
fiber-optic
cables,
follow
these
guidelines:
v
Do
not
route
the
cable
along
a
folding
cable-management
arm.
v
When
attaching
to
a
device
on
slide
rails,
leave
enough
slack
in
the
cable
so
that
it
does
not
bend
to
a
radius
of
less
than
38
mm
(1.5
in.)
when
extended
or
become
pinched
when
retracted.
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
subsystem
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
subsystem
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
subsystem
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.
Controller A Ethernet port
Controller B Ethernet port
ds43bac
k
ether
Figure
19.
Location
of
Ethernet
ports
Chapter
3.
Cabling
the
storage
subsystem
33
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Summary of Contents for TotalStorage DS4300 Turbo
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