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Fibre
channel
products
that
are
commonly
interconnected
to
the
fibre
channel
hub
are
fibre
channel
host
bus
adapters,
FC-AL
storage
devices,
and
FC-AL
storage
arrays.
SCSI
initiators
(workstations
and
servers)
set
up
and
initiate
the
transfer
of
data
to
or
from
the
storage
devices.
The
storage
devices
that
receive
the
requests
made
by
the
SCSI
initiators
are
the
SCSI
targets.
Initiators
and
targets
represent
individual
nodes
that
are
linked
by
the
shared
FC-AL.
See
Figure
4.
Power
on
systems
check
for
the
fibre
channel
hub
Power
on
the
storage
modules
first,
then
the
controller
and
the
fibre
channel
hub,
then
everything
else.
Note:
Make
sure
the
fibre
channel
hub
is
powered
on
before
the
host
adapter
to
insure
proper
loop
initialization.
Perform
the
following
steps
to
insure
proper
operation
of
the
fibre
channel
hub:
1.
Connect
the
power
cord
to
the
fibre
channel
hub,
then
to
the
electrical
outlet.
See
Figure
5.
2.
Power
on
the
attached
FC-AL
compatible
nodes.
3.
Check
the
Device
Active
(green)
LEDs
on
the
fibre
channel
hub
ports.
See
Figure
6
on
page
7.
Figure
4.
Type
3523
fibre
channel
hub
Power Connector
Figure
5.
Type
3523
fibre
channel
hub
power
connector
6
IBM
TotalStorage
DS4000:
Hardware
Maintenance
Manual
Summary of Contents for System Storage DS4000
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