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Chapter
6.
Type
3526
Fibre
Channel
RAID
Controller
The
Type
3526
fibre
channel
RAID
controller
is
compatible
with
the
following
IBM
products:
v
Type
3523
fibre
channel
hub
and
GBIC
(see
Chapter
2
on
page
3)
v
Fibre
channel
PCI
adapter
(FRU
01K7354)
(see
Chapter
3
on
page
11)
v
IBM
DS4000
host
adapter
(FRU
09N7292)
(see
Chapter
4
on
page
13)
v
Type
2109
fibre
channel
switch
v
Type
3534
managed
hub
General
checkout
Use
the
status
LEDs
and
the
“Symptom-to-FRU
index”
on
page
32
to
diagnose
problems.
Note:
The
PD
maps
found
in
the
IBM
TotalStorage
DS4000
Problem
Determination
Guide
provide
you
with
additional
diagnostic
aids.
The
LEDs
of
the
control
unit
indicate
the
hardware
status:
v
Green
LED
indicates
normal
operation
v
Amber
LED
indicates
a
hardware
problem
The
LEDs
on
the
controller
unit
indicate
the
status
of
the
controller
unit
and
its
individual
components.
The
green
LEDs
indicate
a
normal
operating
status;
amber
LEDs
indicate
a
hardware
fault.
Check
all
of
the
LEDs
on
the
front
and
back
of
the
controller
unit
when
it
is
powered
on.
Notes:
1.
If
power
was
just
applied
to
the
controller
unit,
the
green
and
amber
LEDs
might
turn
on
and
off
intermittently.
Wait
until
the
controller
unit
finishes
powering
up
before
you
begin
checking
for
faults.
2.
To
view
the
controller
Customer
Replaceable
Unit
(CRU)
LEDs,
the
front
cover
must
be
removed
from
the
controller
unit.
Also
use
LEDs
on
the
front
cover,
controller
CRUs,
and
drive
units
(if
applicable)
to
determine
whether
the
controllers
and
drives
are
responding
to
I/O
transmissions
from
the
host.
The
following
list
describes
LED
activities:
v
If
a
Fast
Write
Cache
operation
to
the
controller
unit
(or
attached
drive
units),
or
if
other
I/O
activity
is
in
progress,
then
you
might
see
several
green
LEDs
blinking,
including:
the
Fast
Write
Cache
LED
(on
the
front
cover),
controller
CRU
status
LEDs,
or
applicable
drive
activity
LEDs.
v
The
green
Heartbeat
LEDs
on
the
controller
CRUs
blink
continuously.
The
number
and
pattern
of
green
status
LEDs
lit
on
the
controllers
depend
on
how
the
system
is
configured.
An
active
controller
will
not
have
the
same
status
LEDs
lit
as
a
passive
controller.
See
the
appropriate
IBM
TotalStorage
DS4000
Product
Installation
Guide.
©
Copyright
IBM
Corp.
2004
21
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