Configuration
switch
SW1
Configuration
switch
SW1
is
a
5-position
switch
that
is
mounted
on
the
ESM
and
is
accessible
from
the
rear
of
the
expansion
unit.
Box
ID
switch
SW2
Box
ID
switch
SW2
is
a
10-position
rotary
switch
that
sets
the
expansion
unit
ID
using
values
0
through
9.
System-management
software,
such
as
IBM
Director
or
ServeRAID
Manager,
uses
this
ID
when
it
provides
data
and
alerts
for
the
expansion
unit.
Power
features
This
section
contains
instructions
for
turning
the
expansion
unit
on
and
off
under
normal
and
emergency
circumstances.
Turning
on
the
expansion
unit
If
you
are
turning
on
the
expansion
unit
after
an
emergency
shutdown
or
power
outage,
see
“Turning
on
the
expansion
unit
after
an
emergency”
on
page
12.
Complete
the
following
steps
to
turn
on
the
power
for
the
initial
startup
of
the
expansion
unit.
1.
Verify
that:
a.
All
cables
are
properly
attached.
b.
Both
power
cords
are
plugged
into
the
back
of
the
expansion
unit
and
into
properly
grounded
electrical
outlets.
c.
All
hard
disk
drives
are
locked
securely
in
place.
d.
The
configuration
switches
are
set
correctly.
See
Chapter
2,
“ESM
configuration
switches,”
on
page
15.
2.
Check
the
system
documentation
for
all
the
hardware
devices
you
intend
to
turn
on
and
determine
the
proper
power-on
sequence.
Note:
Be
sure
to
turn
on
the
expansion
unit
before
or
at
the
same
time
as
you
turn
on
the
server.
3.
Turn
on
each
device,
based
on
the
power-on
sequence
that
is
described
in
the
documentation
that
comes
with
the
device.
4.
Turn
on
both
power
supplies
on
the
back
of
the
expansion
unit.
The
expansion
unit
might
take
a
few
seconds
to
turn
on.
During
this
time,
you
might
see
the
fault
(amber)
and
the
power
(green)
LEDs
on
the
expansion
unit
turn
on
and
off
intermittently.
When
the
power-on
sequence
is
complete,
only
the
power
(green)
LEDs
on
the
front
and
back
should
remain
on.
If
one
or
more
fault
(amber)
LEDs
remain
lit,
refer
to
Chapter
5,
“Symptom-to-FRU
index,”
on
page
31.
Turning
off
the
expansion
unit
Attention:
Except
in
an
emergency
situation,
never
turn
off
the
power
if
any
fault
LEDs
are
lit
on
the
expansion
unit.
Correct
the
fault
before
you
attempt
to
turn
off
the
power,
using
the
proper
troubleshooting
or
servicing
procedure.
This
will
ensure
that
the
expansion
unit
will
turn
on
correctly
later.
See
Chapter
5,
“Symptom-to-FRU
index,”
on
page
31.
Statement
5:
Chapter
1.
General
information
11
Summary of Contents for EXP400 Type 1733
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