IBM 84885BU User Manual - Page 17

Turning, server

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Turning on the server Approximately 20 seconds after the server is connected to ac power, the power-control button becomes active, and you can turn on the server and start the operating system by pressing the power-control button. The server can also be turned on in any of the following ways: v If a power failure occurs while the server is turned on, the server will restart automatically when power is restored. v If the operating system supports the systems-management software for an optional Remote Supervisor Adapter II, the systems-management software can turn on the server. v If the operating system supports the Wake on LAN® feature, the Wake on LAN feature can turn on the server. v If an optional Remote Supervisor Adapter II is installed in the server, the server can be turned on from the Remote Supervisor Adapter II user interface. 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 remote requests to turn on the server. 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 the 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 the operating system supports this feature. Chapter 1. Introduction 7

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Turning
on
the
server
Approximately
20
seconds
after
the
server
is
connected
to
ac
power,
the
power-control
button
becomes
active,
and
you
can
turn
on
the
server
and
start
the
operating
system
by
pressing
the
power-control
button.
The
server
can
also
be
turned
on
in
any
of
the
following
ways:
v
If
a
power
failure
occurs
while
the
server
is
turned
on,
the
server
will
restart
automatically
when
power
is
restored.
v
If
the
operating
system
supports
the
systems-management
software
for
an
optional
Remote
Supervisor
Adapter
II,
the
systems-management
software
can
turn
on
the
server.
v
If
the
operating
system
supports
the
Wake
on
LAN
®
feature,
the
Wake
on
LAN
feature
can
turn
on
the
server.
v
If
an
optional
Remote
Supervisor
Adapter
II
is
installed
in
the
server,
the
server
can
be
turned
on
from
the
Remote
Supervisor
Adapter
II
user
interface.
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
remote
requests
to
turn
on
the
server.
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
the
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
the
operating
system
supports
this
feature.
Chapter
1.
Introduction
7