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Table
40.
DS4400
storage
server
host-side
and
drive-side
mini
hub
indicator
lights
(continued)
Icon
Indicator
light
Color
Normal
operation
Problem
indicator
Possible
condition
indicated
by
the
problem
indicator
Loop
good
Green
On
Off
v
The
loop
is
not
operational,
no
devices
are
connected
v
Mini
hub
failed
or
a
faulty
device
is
connected
to
the
mini
hub
v
If
there
is
no
SFP
module
installed,
the
indicator
will
be
lit
v
If
one
functioning
SFP
module
is
installed
in
the
host-side
mini
hub
port
and
there
is
no
fibre
channel
cable
connected
to
it,
the
loop
good
indicator
light
will
not
be
lit.
If
one
functioning
SFP
module
is
installed
in
the
drive-side
mini
hub
port
and
there
is
no
fibre
channel
cable
connected
to
it,
the
loop
good
indicator
light
will
be
lit.
v
Drive
enclosure
failed
(drive-side
mini
hub
only)
Bypass
(lower
port)
Amber
Off
On
v
Lower
mini
hub
port
is
bypassed;
there
are
no
devices
connected
v
Mini
hub
or
SFP
module
failed
or
is
loose
v
Fiber-optic
cables
are
damaged
Note:
When
there
are
two
functioning
SFP
modules
installed
into
the
mini
hub
port
and
there
are
no
fibre
channel
cables
connected
to
them,
the
bypass
indicator
light
is
lit.
If
there
is
only
one
functioning
SFP
module
installed
in
a
host-side
mini
hub
and
there
are
no
fibre
channel
cables
connected
to
it,
the
indicator
light
is
not
lit.
However,
the
drive-side
mini
hub
bypass
indicator
light
will
be
lit
when
there
is
one
functioning
SFP
module
installed
in
the
mini
hub
port
and
the
mini
hub
has
no
fibre
channel
cables
connected
to
it.
88
IBM
TotalStorage
DS4000:
Hardware
Maintenance
Manual
Summary of Contents for System Storage DS4000
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