HP Instant Capacity Version 10.x User Guide (762794-001, March 2014)

# icapmodify -d 1
6 core units are now active
NOTE: If the core deactivation command is run on the Onboard Administrator, the partition ID
must be specified using the p option as follows:
icapmodify -d <no_of_cores> -p <nparId[:vparId]>
Deactivating cores in nPartitions
The software provides two types of core deactivation:
• Instant (the default behavior for the icapmodify command) — deactivation occurs
immediately.
• Deferred (icapmodify -D) — deactivation occurs after the next reboot of the partition. Instant
deactivation of cores occur when the icapmodify command is used with the -d option, but
without the -D option.
Partition constraints
An nPartition must have a minimum of one active core. Deactivation of cores is limited by this rule.
If the deactivation applies to a virtual partition, additional constraints might apply, such as the
minimum number of cores specified for the virtual partition.
Activating cores
The icapmodify command provides the ability to increase processing capacity instantly by
activating cores with available usage rights in iCAP systems. At any time, any number of inactive
cores with usage rights can be activated, if sufficient usage rights are available. Whether you are
activating or deactivating cores, the icapmodify command adjusts only the number of dynamic
cores, and it does not explicitly identify specific cores.
# icapmodify -a 1
7 core units are now active
NOTE: If the core activation command is run on the Onboard Administrator, the partition ID must
be specified using the p option as follows:
icapmodify -a <no_of_cores> -p <nparId[:vparId]>
Activating cores in nPartitions
The iCAP software provides two types of activation:
• Instant (the default behavior for the icapmodify command) — activation occurs immediately.
• Deferred (icapmodify -D) — activation occurs after the next reboot of the partition. Instant
activation of cores occur when the icapmodify command is used with either the -a or -s
option, and the -D option is not specified. If the -s option is used, the number of cores
specified must be greater than the number of currently active cores.
Deferred activation of cores occur when the icapmodify command is used with both the -D
option and either the -a or -s option. With the deferred option (-D), core activation occurs
after a reboot of the partition. The reboot (and the core activation) can take place at a planned
time. For example, if you activate cores in deferred activation mode and schedule a partition
reboot to occur on the first day of the next month, the cores are activated at that time.
Constraints
The iCAP software does not activate cores that are marked for deconfiguration. Also, you cannot
use iCAP to activate more cores than that are configured in the current nPartition. If you want more
cores, you must modify the nPartition with the parmodify command. You can use iCAP to activate
more cores than are configured into the current virtual partition, but only if the associated nPartition
102 Using iCAP on HP Integrity Superdome 2