HP Instant Capacity Version 10.x User Guide (5900-1581, March 2011)

software, the unreachable partition may be assumed to be
using all cores on cells configured for that partition. Because
of this, cells in partitions from which usage rights have been
acquired should be rebooted or made inactive within 12
hours. If this is not done, the partition can begin to consume
temporary capacity. If temporary capacity is not available,
the complex might no longer be in compliance with the iCAP
contract. Cells can be made inactive by removing them from
the partition, shutting down the partition from within the OS
by using shutdown -R -H, or with the MP RR command.
If, at the time of rights seizure, all member partitions are
unreachable, the rights seizure is deferred and must be
viewed as a limited and immediate loan of usage rights
from the specified partition to the group. This loan of seized
usage rights expires in 10 days. Upon expiration, usage
rights are automatically restored to the member partitions
from which they were seized. The expiration date for a
rights seizure operation effectively terminates the period
during which the core usage rights are available to other
group members for purposes of disaster recovery. If none
of the member partitions are reachable by the expiration
date for a particular member, the usage rights are
automatically restored (reassigned) to the member partition
(or complex, in the case of unassigned seized rights) from
which they were seized. However, if the seized usage rights
have been redeployed to other members and are not
released at expiration time, the group might go out of
compliance, or temporary capacity might be used to
maintain compliance.
If any partition of the inaccessible member from which rights
seizures were deferred reconnects to the group before the
expiration date, then the seized core usage rights (for all
partitions) are finalized as a loan from the member to the
group, the expiration date is no longer relevant, and the
usage rights can thereafter be manipulated with normal
icapmodify operations.
While rights seizure operations can be performed in a virtual
partition environment, the rights seizure always operates
on, and affects, the entire nPartition. This means:
• Rights seizure can be performed only if all the virtual
partitions for an nPartition are down.
• For a given nPartition, you can specify any of the virtual
partition host names as the target of a rights seizure
operation or as the target of a usage rights restore
operation.
• Because rights seizure leaves only a minimum of core
usage rights with the nPartition, is it likely that the
remaining number of core usage rights is not sufficient
to satisfy the number of cores assigned to each virtual
partition in the nPartition. This means that the virtual
partitions likely cannot be booted (due to
noncompliance) once the original failure is corrected.
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