1.
Install
SFP
modules
in
host
ports
on
RAID
controllers
A
and
B.
Note:
The
alignment
of
the
single-ported
host
channels
on
controller
A
are
opposite
those
of
controller
B.
Before
inserting
an
SFP
module
into
a
host
port,
verify
that
the
SFP
module
is
rotated
correctly
to
match
the
alignment
of
the
host
port
on
the
RAID
controller.
Do
not
force-fit.
2.
Connect
the
fibre
channel
cables
from
the
SFP
modules
in
the
DS4800
RAID
controller
host
ports
to
either
the
SFP
modules
in
the
fibre
channel
switch
or
the
SFP
modules
of
the
host
bus
adapters.
shows
the
location
on
the
RAID
controllers
where
the
host-system
cables
connect.
3.
Repeat
steps
and
for
each
additional
redundant
host
connection.
You
can
create
a
maximum
of
four
redundant
host
connections,
as
shown
in
Note:
shows
that
the
DS4800
host
ports
are
connected
to
four
sets
of
FC
host
bus
adapters
(HBAs).
You
can
replace
one
or
all
of
these
sets
of
FC
HBAs
with
FC
switches
as
required.
Host A: Host adapter
2 (or from managed
hub or switch)
Controller B
Controller A
Host A: Host adapter
1 (or from managed
hub or switch)
ds48032
Figure
61.
Location
of
host
cables
on
RAID
controllers
88
IBM
System
Storage
DS4800
Storage
Subsystem:
Installation,
User’s,
and
Maintenance
Guide
Summary of Contents for TotalStorage DS4800
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