![background image](http://html2.mh-extra.com/html/ibm/system-storage-ds4000/system-storage-ds4000_hardware-maintenance-manual_3312302140.webp)
c.
The
tray
number
switches
on
the
expansion
unit
are
set
correctly.
(See
the
IBM
Product
Installation
Guide
for
more
information.)
2.
Check
the
system
documentation
for
all
the
hardware
devices
you
intend
to
turn
on
and
determine
the
proper
startup
sequence.
Note:
Be
sure
to
turn
on
the
IBM
FAStT
EXP500
before
you
turn
on
the
server.
3.
Turn
on
the
power
to
each
device,
based
on
the
startup
sequence.
Attention:
If
you
are
restarting
the
system
after
a
normal
shutdown,
wait
at
least
10
seconds
before
you
turn
on
the
power
supply
switches.
4.
Turn
on
both
power
supply
switches
on
the
back
of
the
unit.
The
expansion
unit
might
take
a
few
seconds
to
power
up.
During
this
time,
you
might
see
the
amber
and
green
LEDs
on
the
expansion
unit
turn
on
and
off
intermittently.
When
the
startup
sequence
is
complete,
only
the
green
LEDs
on
the
front
and
back
and
the
amber
Bypass
LEDs
for
unconnected
GBIC
ports
should
remain
on.
If
other
amber
LEDs
remain
lit,
see
“Symptom-to-FRU
index”
on
page
115.
Turning
off
the
expansion
unit
Attention:
Except
in
an
emergency,
never
turn
off
the
power
if
any
Fault
LEDs
are
lit
on
the
expansion
unit.
Correct
the
fault
before
you
turn
off
the
power,
using
the
proper
troubleshooting
or
servicing
procedure.
This
action
ensures
that
the
expansion
unit
will
power
up
correctly
later.
For
guidance,
see
“Symptom-to-FRU
index”
on
page
115.
The
expansion
unit
is
designed
to
run
continuously,
24
hours
a
day.
After
you
turn
on
the
expansion
unit,
do
not
turn
it
off.
Turn
off
the
power
only
when:
v
Instructions
in
a
hardware
or
software
procedure
require
you
to
turn
off
the
power.
v
A
service
technician
tells
you
to
turn
off
the
power.
v
A
power
outage
or
emergency
situation
occurs
(see
“Performing
an
emergency
shutdown”
on
page
113).
CAUTION:
The
power
control
button
on
the
device
and
the
power
switch
on
the
power
supply
do
not
turn
off
the
electrical
current
supplied
to
the
device.
The
device
also
might
have
more
than
one
power
cord.
To
remove
all
electrical
current
from
the
device,
ensure
that
all
power
cords
are
disconnected
from
the
power
source.
Perform
the
following
steps
to
turn
off
the
power:
1.
Check
the
system
documentation
for
all
hardware
devices
you
intend
to
turn
off
and
determine
the
proper
power-down
sequence.
2.
Make
sure
that
all
I/O
activity
has
stopped.
3.
Make
sure
that
all
amber
Fault
LEDs
are
off.
If
any
Fault
LEDs
are
lit
(drives,
power
supplies,
or
fans),
correct
the
problem
before
you
turn
off
the
power.
For
guidance,
see
“Symptom-to-FRU
index”
on
page
115.
4.
Turn
off
both
power
supply
switches
on
the
back
on
the
expansion
unit.
112
IBM
TotalStorage
DS4000:
Hardware
Maintenance
Manual
Содержание System Storage DS4000
Страница 1: ...IBM TotalStorage DS4000 Hardware Maintenance Manual GC26 7702 00...
Страница 2: ......
Страница 3: ...IBM TotalStorage DS4000 Hardware Maintenance Manual GC26 7702 00...
Страница 10: ...viii IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 16: ...xiv IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 30: ...2 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 38: ...10 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 44: ...16 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 48: ...20 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 88: ...60 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 120: ...92 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 138: ...110 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 146: ...118 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 178: ...150 IBM TotalStorage DS4000 Hardware Maintenance Manual...
Страница 183: ......
Страница 184: ...Printed in USA GC26 7702 00...