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

Instant Capacity Manpages
iCOD (5) Manpage
Appendix C162
Virtual Partitions
iCOD processors may be present in systems or partitions where virtual
partition technology is employed. In a virtual partition environment,
processors that are not assigned to any virtual partition are considered
inactive (in addition to other classes of inactive processors). Unassigned
processors can be assigned or deassigned using either the icod_modify
command or the vparmodify command, depending on the type of vPars
being used, the type of adjustment needed, and the level of logging or
reporting desired. For example, assignment via the vparmodify
command does not result in logging of the activation, e-mail
configuration change notification, or transmission of an asset report to
HP.
For versions of vPars before A.04, HP recommends using the
icod_modify command when activating or deactivating processors in a
virtual partition. This is the best way to ensure that the complex
remains in a compliant state.
For vPars versions A.04 or greater, the icod_modify command must be
used in a virtual partition environment when you are making any
adjustment to an nPartition. If you are adjusting processor assignments
across virtual partitions in a single nPartition, you should use the
vparmodify command for the best coordination between the Instant
Capacity software and the vPars software, and for optimized
performance. The vparmodify command is the fastest and most efficient
way to adjust capacity within virtual partitions of a single hard
partition, but it does not affect the intended active count for the
nPartition and it therefore cannot be used to migrate unused capacity
either to or from other nPartitions.
Note that with vPars version A.04 or greater, a compliance check is
performed whenever a virtual partition is booted. If the total number of
processors assigned to all virtual partitions in the current vPar database
exceeds the nPartition’s intended active processor count, the Instant
Capacity software notifies the vPar monitor, and the monitor prevents
any virtual partition from booting until the user performs a hard
partition boot and modifies either the vPar configuration or the Instant
Capacity intended active count for the nPartition.
See vparmodify (1M) for more information on virtual partitions.