HP-UX System Administrator's Guide: Overview HP-UX 11i v3 (B3921-90011, September 2010)

• Instant Capacity Compatibility with Processor Sets
• VSE Concepts and Terminology
Instant Capacity (iCAP/TiCAP/GiCAP)
Technology Summary
Instant Capacity technology allows you to purchase at a significantly reduced price: cores,
memory, and cell boards that you do not yet own (and cannot yet use). These components, known
as iCAP components or components without usage rights, are standing by, ready for activation when
you need them. You then purchase usage rights for some or all of these components and are
given the ability through the use of a special codeword to activate (temporarily or permanently)
these server components. This gives you the ability to quickly handle peak or unexpected demands
for server resources as long as the system remains in compliance with the Instant Capacity
contract.
There are three types of Instant Capacity:
iCAP You purchase (for a small price) memory, processors, or cell boards for which you do
not yet have usage rights. When you need these resources, you purchase usage rights
for them and receive codewords to activate them. From that point on, you own those
resources.
TiCAP Similar to iCAP, but the usage rights that you purchase are only temporary (TiCAP is
currently sold in 30-day increments). Your usage of the iCAP resources is measured
in 30-minute increments and when you’ve used up the purchased time, the iCAP
resources are deactivated until you activate them again by purchasing another
right-to-use codeword.
GiCAP GiCAP allows users to share rights for Instant Capacity components within a group
of servers, and provides “pooled” temporary capacity across the group.
Tools to Administer/Configure
iCAP Commands
A series of iCAP commands allows you to interact with HP-UX to adjust the processing capacity
of a server containing iCAP hardware. The commands allow you to enter purchased codewords
to activate your rights to use the stand-by processors, or to decrease the processing resources
you are using in order to save money.
The commands to administer iCAP resources are:
Load Balancing (One Multiple Core Server, One Operating System Instance) 27