User's Manual

Core Activation
As previously described, an Instant Capacity system contains a specified quantity of activated
processing capacity (cells, cores, and memory) and a specified amount of deactivated processing
capacity. Systems can have fewer active components than they have rights to activate. Such
systems can instantly activate additional components without the need to purchase an RTU, up
to the number of component usage rights on the system.
Increasing Processing Capacity by Purchasing RTUs
When processing demands change significantly, you can enable use of additional system
components using the following procedure:
1. Purchase additional usage rights for a component type, by sending a purchase order to HP
for an Instant Capacity RTU product. Soon after HP receives your purchase order, you
receive a letter from HP that contains information about retrieving the RTU codeword from
the Utility Pricing Solutions web portal.
2. Acquire the RTU codeword from the Utility Pricing Solutions web portal:
http://www.hp.com/go/icap/portal
3. Apply the RTU codeword by entering the icapmodify -C command (note the -C option
is uppercase) on any partition in the complex.
4. Activate a component. Depending on the type of component, do one of the following:
• Activate a core in a hard partition (nPartition) by entering the icapmodify -a
command. Note: For details about activating a core in a virtual partition, see “Instant
Capacity Integration with Virtual Partitions (HP-UX)” (page 31).
• Activate a cell board by using the parmodify or parmgr command. For details about
activation of cell boards (and memory), see “Activation of an Instant Capacity Cell
Board” (page 97).
IMPORTANT: To avoid a delay in activation of additional cores, purchase and keep in reserve
some quantity of temporary capacity for the system. Temporary capacity can be used to instantly
and temporarily activate cores while waiting for an RTU codeword. For details about temporary
capacity, see Chapter 5. You can also temporarily activate one or more cores using the Instant
Access Capacity (IAC) provided with the purchase of Instant Capacity processors.
40 Getting Started