IBM 88410EU User Manual - Page 18

Turning, server

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Note: When 4 GB or more of memory (physical or logical) is installed, some memory is reserved for various system resources and is unavailable to the operating system. The amount of memory that is reserved for system resources depends on the operating system, the configuration of the server, and the configured PCI options. Turning off the server When you turn off the server and leave it connected to ac power, the server can respond to requests from the service processor, such as a remote request to turn on the server. While the server remains connected to ac power, one or more fans might continue to run. To remove all power from the server, you must disconnect it from the power source. Some operating systems require an orderly shutdown before you turn off the server. See the operating-system documentation for information about shutting down the operating system. Statement 5 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. 2 1 The server can be turned off in any of the following ways: v You can turn off the server from the operating system, if your operating system supports this feature. After an orderly shutdown of the operating system, the server will be turned off automatically. v You can press the power-control button to start an orderly shutdown of the operating system and turn off the server, if your operating system supports this feature. v If the operating system stops functioning, you can press and hold the power-control button for more than 4 seconds to turn off the server. v If the server is connected to an Advanced System Management interconnect network that contains at least one server with an optional Remote Supervisor Adapter installed, the server can be turned off from the Remote Supervisor Adapter user interface. v If an optional Remote Supervisor Adapter is installed in the server, the server can be turned off from the Remote Supervisor Adapter user interface. v If the Wake on LAN feature turned on the server, the Wake on LAN feature can turn off the server. v The integrated system management processor can turn off the server as an automatic response to a critical system failure. v You can turn off the server through a request from the service processor. 8 xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide

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Note:
When
4
GB
or
more
of
memory
(physical
or
logical)
is
installed,
some
memory
is
reserved
for
various
system
resources
and
is
unavailable
to
the
operating
system.
The
amount
of
memory
that
is
reserved
for
system
resources
depends
on
the
operating
system,
the
configuration
of
the
server,
and
the
configured
PCI
options.
Turning
off
the
server
When
you
turn
off
the
server
and
leave
it
connected
to
ac
power,
the
server
can
respond
to
requests
from
the
service
processor,
such
as
a
remote
request
to
turn
on
the
server.
While
the
server
remains
connected
to
ac
power,
one
or
more
fans
might
continue
to
run.
To
remove
all
power
from
the
server,
you
must
disconnect
it
from
the
power
source.
Some
operating
systems
require
an
orderly
shutdown
before
you
turn
off
the
server.
See
the
operating-system
documentation
for
information
about
shutting
down
the
operating
system.
Statement
5
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.
1
2
The
server
can
be
turned
off
in
any
of
the
following
ways:
v
You
can
turn
off
the
server
from
the
operating
system,
if
your
operating
system
supports
this
feature.
After
an
orderly
shutdown
of
the
operating
system,
the
server
will
be
turned
off
automatically.
v
You
can
press
the
power-control
button
to
start
an
orderly
shutdown
of
the
operating
system
and
turn
off
the
server,
if
your
operating
system
supports
this
feature.
v
If
the
operating
system
stops
functioning,
you
can
press
and
hold
the
power-control
button
for
more
than
4
seconds
to
turn
off
the
server.
v
If
the
server
is
connected
to
an
Advanced
System
Management
interconnect
network
that
contains
at
least
one
server
with
an
optional
Remote
Supervisor
Adapter
installed,
the
server
can
be
turned
off
from
the
Remote
Supervisor
Adapter
user
interface.
v
If
an
optional
Remote
Supervisor
Adapter
is
installed
in
the
server,
the
server
can
be
turned
off
from
the
Remote
Supervisor
Adapter
user
interface.
v
If
the
Wake
on
LAN
feature
turned
on
the
server,
the
Wake
on
LAN
feature
can
turn
off
the
server.
v
The
integrated
system
management
processor
can
turn
off
the
server
as
an
automatic
response
to
a
critical
system
failure.
v
You
can
turn
off
the
server
through
a
request
from
the
service
processor.
8
xSeries
236
Type
8841:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide