Important
v
Always
add
a
new
storage
expansion
enclosure
to
the
end
of
a
drive
loop,
as
described
in
this
section.
Exception
when
intermixing
DS4000
EXP700s
and
DS4000
EXP710s:
Depending
on
the
model
of
the
last
storage
expansion
enclosure
in
the
existing
drive
loop
and
the
model
of
the
storage
expansion
enclosure
to
be
added,
you
might
not
be
able
to
add
a
new
storage
expansion
enclosure
to
the
end
of
a
drive
loop
if
you
are
already
intermixing
DS4000
EXP700s
and
DS4000
EXP710s
in
the
same
drive
loop.
To
minimize
problems
that
could
arise
during
the
addition
of
a
new
storage
expansion
enclosure
in
a
redundant
drive
loop
environment
that
intermixes
DS4000
EXP700s
and
DS4000
EXP710s,
it
is
strongly
recommended
that
the
addition
of
new
storage
expansion
enclosures
be
performed
when
the
configuration
is
offline
(all
applications
have
been
stopped
and
the
DS4000
configuration
has
been
powered
down).
Contact
IBM
support
for
help
if
required.
v
If
you
are
intermixing
DS4000
EXP700s
and
DS4000
EXP710s
in
the
same
drive
loop,
review
the
requirements
discussed
in
v
If
you
are
intermixing
FAStT
EXP500s
and
DS4000
EXP700s
in
the
same
drive
loop,
review
the
requirements
discussed
in
shows
an
example
of
a
fully
configured
storage
server
with
the
maximum
number
of
drive
loops
that
are
supported.
Before
you
cable
a
new
storage
expansion
enclosure
to
a
loop,
refer
to
the
Fibre
Channel
Cabling
Instructions
that
come
with
your
storage
server
for
specific
instructions.
To
add
a
storage
expansion
enclosure
to
a
fibre
channel
loop,
cable
the
SFP
module
input
port
on
an
existing
ESM
(shown
as
″
Last
DS4000
EXP700
″
in
to
an
SFP
module
output
port
(shown
as
″
New
DS4000
EXP700
″
).
You
can
cable
additional
storage
expansion
enclosures
until
the
loop
reaches
the
maximum
defined
by
the
storage
server.
The
storage
server
might
also
have
cabling
configuration
information
or
restrictions
that
you
must
follow.
The
numbers
provided
in
indicate
the
proper
cabling
order
for
adding
a
new
storage
expansion
enclosure.
Note:
shows
only
one
example
of
redundant
loop
cabling.
Other
examples
are
provided
in
62
IBM
TotalStorage
DS4000
EXP700
and
EXP710
Storage
Expansion
Enclosures:
Installation,
User’s,
and
Maintenance
Guide
Summary of Contents for TotalStorage DS4000 EXP710
Page 2: ......
Page 157: ......
Page 158: ... Part Number 25R0398 Printed in USA gc26 7735 00 1P P N 25R0398 ...
