HP Instant Capacity Version 10.x User Guide (762794-001, March 2014)

In some circumstances, the cron job set up by the icapmanage -a -S command may stop
running, perhaps due to another operation on the Group Manager system. The cron entry can
be restored by any of the following methods:
• Manually edit the crontab file and re-enter the icapmanage -t instruction. This is the
preferred method.
• Remove and re-add the standby Group Manager.
• Run icapmanage -Q
on the active Group Manager. This is not recommended because it might have some
unexpected side effects.
GiCAP grouping rules
A GiCAP group consists of a list of server complexes that are allowed to share iCAP usage rights
(for cores, cell boards, and memory) and temporary capacity. Other than performance
considerations, there are no particular constraints on the number of servers allowed in a group,
but there are grouping rules defined by HP to specify the types of servers allowed to group together.
NOTE: The iCAP installation does not include a default grouping rules file. Grouping rules must
be downloaded from the HP Utility Pricing Solutions portal:
http://www.hp.com/go/icap/portal
Grouping rules are defined according to server class. The price structure of usage rights is also
based on server class. Since GiCAP pools usage rights, these usage rights can be used on any
type of server, regardless of the server class for which they were originally purchased. Therefore,
grouping rules were created to define the classes of servers allowed to share usage rights.
Use the icapmanage -R command to view the hardware grouping information. When used in
combination with a list of host names, this command reports all hardware types with which the
hosts might be grouped. If the hosts are not compatible with each other, no hardware is reported.
Without a list of host names, this command reports all supported hardware and grouping rules.
Under some circumstances you might need to acquire newer grouping rules from the portal (for
example, when adding new hardware not previously covered by the grouping rules currently in
use). Install the encrypted rules file on the Group Manager system using the icapmanage -i
command. The icapmanage -R command shows the version number of the grouping rules
installed, and when you download a new grouping rules file use icapmanage -R -U to compare
the version and supported systems before deciding to install the new grouping rules.
The following command installs a grouping rules file, retrieved from the portal, on the Group
Manager system:
> icapmanage -i -U FSTL012234_gicap.encrypt
GiCAP sharing rights
Although GiCAP is part of iCAP and is installed at the same time as iCAP, it is not enabled during
installation. To share resources across groups, you must purchase GiCAP sharing rights, acquire
the GiCAP codeword from the HP Utility Pricing Solutions portal, and apply the associated codeword
to the Group Manager system. Application of the sharing rights codeword to the Group Manager
system enables the addition of members with iCAP components to groups.
You can purchase as many GiCAP sharing rights as the total number of cores without usage rights
across all the potential group members. Members can be added to a GiCAP group if there are
sufficient sharing rights available, and if the grouping rules indicate hardware compatibility.
Unlike other iCAP codewords, GiCAP codewords must be generated for and applied to a specific
partition if the Group Manager is on a partitionable system. This means that to retrieve the
codeword, you must specify the purchase order number, the system serial number and partition
70 GiCAP