IBM TOTALSTORAGE DS4500 User Manual
Totalstorage, Ds4500, Storage
IBM
TotalStorage
DS4500
Storage
Subsystem
Fibre
Channel
Cabling
Guide
Attention
This
document
contains
important
changes
to
the
required
cabling
scheme
for
connecting
storage
expansion
enclosures
to
the
IBM
®
TotalStorage
®
DS4500
Storage
Subsystem.
The
fibre
channel
cabling
instructions
in
of
this
document
replace
the
information
provided
in
the
IBM
TotalStorage
DS4500
Fibre
Channel
Cabling
Instructions
(pn
25R0406)
and
the
IBM
TotalStorage
DS4500
Installation
and
Support
Guide
(pn
25R0402).
Additionally,
if
you
are
connecting
DS4000
EXP700
or
EXP710
storage
expansion
enclosures
to
a
DS4500,
follow
the
instructions
provided
in
the
this
document
and
not
the
instructions
on
drive-side
fibre
channel
cabling
presented
in
the
IBM
TotalStorage
DS4000
EXP700
and
EXP710
Installation,
User’s,
and
Maintenance
Guide.
This
document
contains
information
on
the
following
topics:
v
v
v
Using
IBM
SFP
modules
and
IBM
fibre
channel
cables
The
Small
Form-Factor
Pluggable
(SFP)
module
housing
and
fibre
channel
cable
have
integrated
guide
keys
that
prevent
you
from
inserting
these
devices
incorrectly.
You
must
insert
SFP
modules
into
ports
with
minimal
pressure
so
that
you
do
not
damage
either
the
SFP
module
or
the
port.
You
can
insert
an
SFP
module
into
an
active
port
without
affecting
the
operational
loop
performance.
You
must
connect
the
fibre
channel
cable
to
the
SFP
module
after
you
insert
the
SFP
module
into
the
port.
Attention:
Remove
SFP
modules
from
any
unused
mini
hub
ports
(both
host-side
and
drive-side)
on
the
DS4500
Storage
Subsystem.
To
avoid
damage
to
your
fibre-optic
cables:
v
Do
not
route
the
cable
along
a
folding
cable-management
arm.
v
For
devices
on
slide
rails,
leave
enough
slack
in
the
cable
so
that
it
does
not
bend
to
a
radius
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
damaged
by
other
devices
in
the
rack
cabinet.
v
Do
not
use
plastic
cable
ties
in
place
of
the
provided
cable
straps.
v
Do
not
overtighten
the
cable
straps
or
bend
the
cables
to
a
diameter
of
less
than
76
mm
(3
in.),
or
a
radius
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.