HP Instant Capacity (iCAP) manual Rights Seizure

flag to false for an inactive cell also releases the cell usage right and associated memory usage rights.

•Maximum core usage rights are seized.

There is no way to specify the number of core usage rights that are seized. Instant Capacity seizes the maximum number possible, while ensuring that the nPartition can still be booted. This seizure results in a partition with one core usage right for each active cell upon reboot of the server.

•Expiration of seized usage rights (complete server failure)

If at the time of an attempted rights seizure all member partitions are unreachable, the right seizure is instead treated as a loan of usage rights from the specified member to the group. The loan expires 10 days from the first use of the icapmanage -xcommand. If none of the member partitions are reachable by the expiration date for a particular member, the usage rights are automatically restored (or reassigned) to the member from which they were seized. If, however, one of those member partitions reconnects to the group before the expiration, the loan can be committed, with the usage rights actually transferred from the member.

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 -xcommand 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 -zspecifying 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.

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