HP OpenVMS Systems Documentation

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HP Pay per use (PPU) User's Guide for versions 8.x > Appendix D Glossary

Pay per use Terminology

  Table of Contents


The following terms are commonly used in conjunction with Pay per use (PPU):

configured core

A core that has been configured at the boot console handler (BCH or EFI) and is available for activation.

deconfigured core

A core that has not yet been configured at the boot console handler (BCH or EFI). The PPU software cannot activate a core that is deconfigured.

hard partition 

A physical partitioning of a computer that divides the computer into groups of cell boards where each group operates independently of the other groups. A hard partition can run a single instance of the operating system or be further divided into virtual partitions (on HP-UX).

inactive cell

On a hardware-partitionable system, a cell that is either powered off, or in a state prior to BCH, defined as “waiting on SINC_BIB”.

inactive partition

A partition where all of the cells in the partition are inactive.

Instant Capacity

Also called iCAP, and formerly known as Instant Capacity On Demand, or iCOD. The HP Utility Pricing Solutions product that has a pricing model based on an initial purchase of components (cores, cell boards, and memory) without usage rights. With Instant Capacity you initially purchase a specified number of activated components and a specified number of deactivated components. To activate an Instant Capacity component, you purchase the usage rights and obtain rights through the application of an RTU codeword.

Pay per use

The HP Utility Pricing Solutions product that has a pricing model in which you are charged for actual core usage. You acquire a specific hardware platform, and number of core(s), and are charged for the actual usage, based on either the percent of core utilization or the number of active cores.


An HP web site that gives customers an interface to view their PPU utilization information. See “PPU Web Portal” for details.

PPU Agent

The software component that provides information to the utility meter. On HP-UX systems, this component is implemented as a daemon (“ppud” daemon). On OpenVMS systems, this component is implemented as a process (PPU_SERVER). On Windows systems, this component is implemented as a service.

usage database

The HP repository that contains PPU utilization information. You can access this information through the PPU web portal.

utility meter

The software and hardware device that receives PPU utilization information from the PPU software. The utility meter is initially installed and configured by an HP service representative.

virtual machine 

A software entity provided by HP Integrity Virtual Machines (Integrity VM). This technology allows a single server or nPartition to act as an Integrity VM Host for multiple individual virtual machines (also known as “VM Guests”), each running its own instance of an operation system (referred to as a “guest OS”). Each VM Guest emulates a real Integrity machine, including firmware. Virtual machines are servers in the Virtual Server Environment (VSE).

virtual partition

On HP-UX, a software partitioning of a computer or hard partition where each virtual partition contains an instance of an operating system. Though a hard partition can contain multiple virtual partitions, the inverse is not true (that is, a virtual partition cannot span hard partition boundaries).