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

If a system cannot reconnect to the Group Manager within the 10-day period, you can extend
the expiration of the seized usage rights. This extension is applied to the Group Manager
through the use of a codeword obtained from HP support.
• Core usage rights are always seized from the nPartition, even when the specified host is a
virtual partition.
• Usage rights can be seized from an nPartition only when:
The nPartition is down.◦
◦ Assuming the nPartition is hosting virtual partitions, all the virtual partitions are down.
In either of these cases, rights seizure is the only technique available for migrating core usage
rights from the nPartition.
• Because rights are seized at the nPartition level, when an entire server is unavailable, to seize
all rights from the server, the icapmanage -x command must be run on each nPartition in
the server.
• An nPartition must be unavailable for usage rights to be seized.
Usage rights can be seized only if the partition is unavailable as determined by the ping
command.
• Partial server failure
If, at the time of rights seizure at least one nPartition of the server is still running, Instant
Capacity can make an immediate adjustment to the available core usage rights, and the
seized core usage rights do not have an expiration date. However, because there are other
nPartitions running Instant Capacity software, the unreachable partition might be assumed to
be using all cores on cells configured for that partition, resulting in possible noncompliance
or temporary capacity usage. To avoid this, cells in partitions from which usage rights have
been seized should be made inactive within 12 hours.
• When seizing usage rights from an nPartition that contains virtual partitions:
All the virtual partitions must be down before rights seizure is allowed.◦
◦ Usage rights cannot restored to the virtual partitions before they boot. Otherwise, you
may not be able to reboot certain virtual partitions, depending on the vPars database
definition and the allocation of usage rights among the virtual partitions. Run the restoration
command icapmanage -z specifying any virtual partition of the nPartition from which
rights were seized. Failure to restore usage rights to the virtual partition before connecting
to the Group Manager can leave the virtual partition in a nonbootable state, requiring
additional steps to fix the vPars database before the virtual partitions can be booted.
• If there are multiple VM guests for the hard partition, they will be affected by the reduction of
usage rights. In an HP Integrity VM environment, specify rights seizure only for the VM host,
not the guests.
• The Group Manager must have network connectivity.
If the Group Manager is also unavailable, and a standby Group Manager is not defined, it
is not possible to transfer usage rights to a standby server.
For additional information about rights seizure, see the Cost-effective high-availability solutions
with HP Instant Capacity on HP-UX white paper available at:
www.hp.com/go/hp-icap-docs
Considerations for Multiple Groups
You can create multiple GiCAP groups, and they can be managed by the same Group Manager
or by different Group Manager systems. Note that if a Group Manager has an associated standby
Considerations for Multiple Groups 87