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Using the SMI or the ASMI, you can view or modify the proper IPL settings in order to set the
boot mode to partition standby and then turn the system on. However, the HMC can be also
used to power on the managed system (and is highly recommended). Using the HMC to turn
the system on requires you to select one of the following choices:
Partition Standby
– The Partition Standby power-on mode allows you to create and activate logical
partitions.
– When the Partition Standby power-on is completed, the operator panel on the
managed system displays LPAR..., indicating the managed system is ready for you to
use the HMC to partition its resources and, possibly, activate them.
– When a partition is activated, the HMC requires you to select the boot mode of the
single partition.
System Profile
The System Profile option powers on the system according to a predefined set of profiles.
The profiles are activated in the order in which they are shown in the system profile.
Partition autostart
This option powers on the managed system to partition standby mode and then activates
all partitions that have been designated autostart.
After the system boots with any of the above choices, the HMC can be used to manage the
system, such as continuing to boot from the operating system or manage the logical
partitions. See 2.12.2, "Hardware Management Console" on page 38.
2.12.4 Definitions of partitions
Describing the detailed process to work with the HMC and the management tasks to create
and manage a logical partition (LPAR or dynamic LPAR) is not the intention of this
documentation. The following section describes the additional functionality used to create
partitions that are using fractional elements of available system resources, namely
Micro-Partitioning.
For a better understanding of the partitioning concept, this section contains an overview of
common terminology. There are two important components:
Managed systems,
profiles
Managed systems
Managed systems are physical systems that are managed by the HMC, whereby one HMC
can manage more managed systems at a time.
Profiles
A profile defines the configuration of a logical partition or managed system. There are three
types of profiles that can be used to create multiple profiles for each logical partition or
managed system:
Partition profile
– A partition profile includes the collection of resource specifications, such as processing
units, memory, and I/O resources, because a logical partition does not know any
resource until it is activated.
Chapter 2. Architecture and technical overview
39
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