HP Instant Capacity User's Guide for versions B.07.x

Using Instant Capacity to Manage Processing Capacity
Activating Processors
Chapter 456
Activating Processors
The icod_modify command provides the ability to increase processing
capacity instantly by activating licensed processors in nPartitions (hard
partitions) of Instant Capacity systems. At any time, any number of
inactive (licensed) processors can be activated, in accordance with
complex-wide compliance. See “Instant Capacity Integration with
Virtual Partitions” on page 132 for details about activation in virtual
partitions.
Activating
Processors in
nPartitions
The software provides two types of activation:
• Instant (icod_modify command’s default behavior) — the activation
occurs immediately
• Deferred (icod_modify command’s -D option) — the activation
occurs after the next reboot of the partition
Instant activation of processors occurs when the icod_modify command
is used with either the -a or -s option, and the -D option is not specified.
Deferred activation of processors occurs when the icod_modify
command is used with both the -D option and either the -a or -s option
specified. With the deferred option (-D), processor activation occurs after
a reboot of the partition. The scheduled timing of the reboot (and the
processor activation) can take place at a planned time. For example, if
you activate processors in deferred activation mode and schedule a
partition reboot to occur on the first day of the next month, the
processors are activated at that time.
IMPORTANT Always use the shutdown command when shutting down or rebooting a
partition with Instant Capacity. See the manpage shutdown (1M) for
information on the shutdown command.
Deferred activation does change the quantity of activated and
inactivated processing capacity, even if the partition reboot has not yet
occurred. Complex-wide compliance checking is calculated as if the
activation had not been deferred.