You can power on or power off a system with or without
a management console by using
this procedure.
Attention: If possible, have the customer shut down all
applications and partitions before powering off the system. If you
use the power-on button on the control panel, or enter commands at
the management console to stop
the system, you might cause unpredictable results in the data files
if you do not shut down all applications and partitions first. Also,
the next time you start the system, it might take longer if all applications
are not ended before stopping the system.
Installing the power cords
Note: Before powering on a system, ensure
that the power cords have been plugged in to all of the power supplies
on all of the processor enclosures. Install the cords in the following
order: - Secondary 2
- Secondary 3
- Primary
- Secondary 1
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Powering on a system by using a management console
To power
on a managed system by using a Hardware Management Console (HMC), complete
the following steps:
- In the navigation area, expand .
- Select the check box next to the name of the server you want to
enable the tasks for that server.
- From the Tasks menu, click . Follow all additional
instructions in the interface.
To power on a managed server by
using an
IBM® Systems Director Management Console (
SDMC), complete the following
steps:
- On the Welcome page under the Resources tab
, select the server.
- Click Actions > Operations > Power
On.
Powering on a system without a management console
To start
a system that is not managed by a management console, follow these steps:
- On a rack-mounted system unit, open the front rack door, if necessary.
On a stand-alone system unit, open the front door.
- Before you press the power button on the control panel, ensure
that power is connected to the system unit as follows:
- All system power cables are connected to a power source.
- The power-on light (F), as shown in the following figure,
is slowly flashing.
- The top of the display (D), as shown in the following
figure, contains 01 V=F.
Figure 1. Control panel with labels
- Press the power button (A), as shown in the preceding
figure, on the control panel.
- Observe the following after pressing the power button:
- The power-on light flashes
slowly (standby) and then becomes solid.
- The system cooling fans are activated after approximately 30 seconds
and begin to accelerate to operating speed.
- Progress indicators, also referred to as checkpoints, appear on
the control panel display while the system is being started. The power-on
light on the control panel stops flashing and remains on, indicating
that system power is on.
Powering off a system by using a management console
Attention: If possible, have the customer shut down the running
logical partitions on the managed system before powering off the managed
system. Powering off the managed system without first shutting down
the logical partitions causes the logical partitions to shut down
abnormally and can cause data loss or an extended initial program
load (IPL) for one or more of the partitions the next time the system
is powered on.
To power off a managed system by using HMC, complete the following
steps:
- In the navigation area, expand .
- Select the check box next to the name of the server you want to
enable the tasks for that server.
- From the Tasks menu, click . Follow all additional instructions in the interface.
- Continue with Removing the power cords.
To power off a managed server by
using an
SDMC, complete
the following steps:
- On the Welcome page under the Resources tab
, select the server.
- Click Actions > Operations > Power
Off.
Powering off a system without a management console
- If an operating system is running, proceed with step 2. Otherwise, press the power button (A),
as shown in Figure 1 and hold for
5 seconds (a countdown is shown on the display panel). The system
power turns off. Proceed to step 4.
- Log in to the system as a user with the authority to run
the shutdown command.
- At the command line, enter one of the
following commands:
- If your system is running the AIX® operating
system, type shutdown.
- If your system is running the IBM i operating system, type PWRDWNSYS
*IMMED.
- If your system is running the Linux operating
system, type shutdown -h.
The command stops the operating system. The system power turns
off.
- Remove the power cords. For instructions, see Removing the power cords.
Removing the power cords
Important: The system might be
equipped with a second power supply. Before continuing with this procedure,
ensure that all power sources to the system have been completely disconnected. (L003) or
To remove the power
cords, complete the following steps:- Unplug any power cables that are attached to the unit from electrical
outlets.
- Remove all power cords from all of the processor enclosures. Start
with the primary processor enclosure (topmost) and then proceed with
each secondary enclosure, working from top to bottom.
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