Stopping A System By Using The Hmc - IBM 8202-E4B Manual

6. Unplug any power cables that are attached to the peripheral devices, such as printers and expansion
units.
Important: The system may be equipped with a second power supply. Before continuing with this
procedure, ensure that all power sources to the system have been disconnected.
(L003)
or

Stopping a system by using the HMC

You can use the Hardware Management Console (HMC) to stop the system or a logical partition.
By default, the managed system is set to power off automatically when you shut down the last running
logical partition on the managed system. If you set the managed system properties on the HMC so that
the managed system does not power off automatically, you must use this procedure to power off your
managed system.
Attention: If possible, shut down the running logical partitions on the managed system before powering
off the managed system. Powering off the managed system without shutting down the logical partitions
first causes the logical partitions to shut down abnormally and can cause data loss. If you use a Virtual
I/O Server (VIOS) logical partition, ensure that all clients are shut down or that the clients have access to
their devices using an alternate method.
To power off a managed system, you must be a member of one of the following roles:
v Super administrator
v Service representative
v Operator
v Product engineer
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Disk drives or solid-state drives