Server power features, Turning on the server, Server – IBM xSeries 235 User Manual
Page 24: Power, Features, Turning
System-error
LED:
This
amber
LED
is
on
when
a
system
error
occurs.
An
LED
on
the
diagnostic
LED
panel
will
also
be
on
to
further
isolate
the
error.
(For
more
information,
see
the
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
on
the
IBM
xSeries
Documentation
CD.)
Ethernet
transmit/receive
activity
LED:
When
this
green
LED
is
on,
there
is
activity
between
the
server
and
the
network.
Server
power
features
This
section
contains
information
about
how
to
properly
turn
your
server
on
and
off.
Turning
on
the
server
Turning
on
the
server
refers
to
the
act
of
plugging
the
power
cords
of
your
server
into
the
power
source
and
starting
the
operating
system.
You
can
turn
on
the
server
in
any
of
the
following
ways:
v
If
the
power
cords
are
connected
to
a
power
source,
you
can
press
the
power-control
button
on
the
front
of
the
server.
Notes:
1.
You
can
install
a
circular
disk
over
the
power-control
button
to
prevent
accidental
manual
power-off.
This
disk,
known
as
the
power-control
button
shield,
comes
with
your
server.
2.
After
you
plug
the
power
cords
of
your
server
into
the
electrical
outlets,
wait
approximately
20
seconds
before
pressing
the
power-control
button.
During
this
time,
the
system-management
adapter
is
initializing;
therefore,
the
power-control
button
does
not
respond.
v
If
the
server
is
turned
on
and
a
power
failure
occurs,
the
server
will
restart
automatically
when
power
is
restored.
v
If
ac
power
is
present,
the
server
is
in
Standby
mode,
and
the
server
is
connected
to
an
ASM
interconnect
network
that
contains
at
least
one
system
with
an
optional
Remote
Supervisor
Adapter
installed,
the
server
can
be
turned
on
from
the
Remote
Supervisor
Adapter
user
interface.
v
If
ac
power
is
present,
the
server
is
in
Standby
mode,
and
an
optional
Remote
Supervisor
Adapter
is
installed
in
the
server,
the
server
can
be
turned
on
from
the
Remote
Supervisor
Adapter
user
interface.
v
When
you
plug
in
your
server
for
the
first
time,
Wake
on
LAN
can
turn
on
the
server.
v
If
your
server
was
previously
turned
on,
it
must
be
properly
placed
in
Standby
mode
for
the
Wake
on
LAN
feature
to
turn
on
the
server.
12
IBM
xSeries
235
Type
8671:
User’s
Guide