User's Manual

Upgrades and Global Instant Capacity
Be careful before upgrading or changing hardware or operating systems for any member of a
GiCAP group. If a member of a GiCAP group changes hardware in such a way that the hardware
is no longer compatible with the group, then the group is considered to be out of compliance
and group functions are restricted.
Also, the number of available sharing rights is adjusted whenever an Instant Capacity codeword
is applied to a GiCAP member system that modifies the number of cores without usage rights
on that member. (RTU and AddOn codewords for cores cause such adjustments.)
If more sharing rights are in use than were purchased for the Group Manager, all groups managed
by that Group Manager are out of compliance and all group functions are restricted until the
problem is resolved. The problem can be resolved by purchasing and applying additional sharing
rights to the Group Manager, purchasing and applying core usage rights to one or more group
members, or removing one or more group members from their group.
When such an incompatibility is detected, the GiCAP Group Manager sends email to the local
root account and to the registered contact email address for each member of the group.
Adding New Partitions
When reconfiguring a member system by adding or deleting an nPartition, use the icapmanage
-u command to add or remove host names to or from the member. For example, enter this
command to add a new nPartition with hostname hostC to member memberA:
icapmanage -u -m memberA -h hostC
To remove a host name, prefix the host name with “!”, as in !hostC. You can also add or remove
a list of hosts; separate the additions from the removals with a “!”, as in
hostA,hostB!hostC,hostD to add hostA and hostB while removing hostC and hostD.
If the Group Manager runs on a partitionable system, changing the configuration of the partitions
may render the Group Manager inoperative. This is because the Group Manager database is tied
to the serial number of the complex, the nPartition ID number, and a virtual partition ID number.
Although adding or modifying partitions does not change these IDs, they are changed if a partition
is deleted and then re-created on the Group Manager.
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