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without rebooting. In addition, failing resources can be dynamically released from the
owning partition, serviced and reattached, or replaced with an acceptable replacement
without disturbing the partition’s activities.
Full System Partition
A special partition called the full system partition assigns all of your managed system’s
resources to one large partition. The full system partition is similar to the traditional,
non-partition method of operating a system. Because all resources are assigned to this
partition, no other partitions can be started when the full system partition is running.
Likewise, the full system partition cannot be started while other partitions are running.
The HMC allows you to easily switch from the full system partition to logical partitions.
The actual setup of the operating system in a partition may require some careful
planning to ensure that no conflicts exist between the two environments.
For more detail on partitions, see the
IBM Hardware Management Console for pSeries
Installation and Operations Guide
, order number SA38-0590.
Processor on Demand
The Processor On Demand (POD) feature of some IBM servers allows the server to be
manufactured with extra processor capacity built in, ready to be activated when you
need it. If your system is ordered with processor on demand features, you can activate
the features and pay for the increased processing power as your needs grow.
The processor on demand feature enables you to start small, and then increase your
processing capacity without disrupting any of your current operations.
For information about how to activate processor on demand features on your server,
refer to “Activating Process for Processor on Demand” on page 8, or refer to the
IBM
Hardware Management Console for pSeries Installation and Operations Guide
, order
number SA38-0590 that was delivered with your hardware management console.
The processor on demand feature offers the capability to non-disruptively activate two
or more processors on a server that was ordered and installed with inactive processor
on demand features. The processor on demand feature adds capacity in increments of
two processors, up to the maximum number of standby processors. The processor on
demand feature adds significant value if you want to upgrade without disruption, handle
business peaks, or add new workloads. The processor on demand feature adds
permanent capacity growth with no requirement to reboot the server.
Processor on Demand Features
If your system was ordered with processor on demand features, your managed system
has a set of processors that are ″active″ and a set of standby processors that are ″not
active.″ In the event that an active processor fails, the inactive processors are then
available to be used by the system until the failing processor is replaced.
Chapter 1. Introducing the Eserver pSeries 690 5