IBM Capacity Management Analytics terminology

This glossary includes terms and definitions for IBM® Capacity Management Analytics.


Application Analytics

This feature uses a user supplied application mapping table to provide reports by application, function, and environment.




Capacity Management Analytics


Processor and CPU can refer to either the complete system box, or to one of the processors (CPUs) within the system box. Although the meaning might be clear from the context, even mainframe professionals must clarify which processor or CPU meaning they are using. IBM uses the term central processor complex (CPC) to refer to the physical collection of hardware that includes main storage, one or more central processors, timers, and channels. (Some system programmers use the term central electronic complex (CEC) to refer to the mainframe box, but the preferred term is CPC.)


IBM ILOG® CPLEX® Optimization Studio is an optimization software package.


DRL is the default three letter identifier for Tivoli® Decision Support for z/OS®. It is used to reference various objects such as Framework Manager items and database objects.


IBM Getting Started Sub-Capacity Pricing (GSSP) for z/OS offers entry pricing for customers with select z/OS International Program License Agreement (IPLA) programs and the applicable Subscription and Support annual maintenance charge.

Getting Started Sub-capacity Pricing helps you:

  • Deploy small projects on z/OS with improved price/performance
  • Provide greater software licensing flexibility by improving alignment between software usage and software charges
  • Increase LPAR capacity without changing software charges for a constant workload
  • Transition smoothly to traditional sub-capacity pricing as workload grows


HCM is the default three letter identifier for CMA. It is used to reference various objects such as Framework Manager items and database objects.


Hardware Instrumentation Services (HIS)—data collection of CPU metrics written to SMF 113 record.


Related to software pricing—IPLA programs have a one-time-charge (OTC) and an (optional) annual maintenance charge, called Subscription & Support. For more information, see the IBM z Systems™ Software Pricing page (


IBM provides Integrated Workload Pricing (IWP) to enhance utilization reporting capabilities of systems that are running IBM z™/OS, which can improve the price/performance for eligible Monthly License Charge (MLC) programs that are running within the same logical partition (LPAR) as select defining programs. These programs are listed in the Description section, Integrated Workload Pricing Defining Programs. The IWP enhancements to the reporting capabilities in z/OS enable the IBM Sub-capacity Reporting Tool (SCRT) to calculate the general-purpose processor time that is consumed by eligible defining programs and adjust the reported MSU values for eligible MLC programs that are running in the same LPAR for eligible Monthly License Charge IWP Adjusted Programs running within the same LPAR as select IWP Defining Programs.


A Logical Partition on a physical server. Essentially LPAR is a virtual server.


LPAR Weight Optimization—this feature has reports as well as a CPLEX model that optimizes the LPAR weight value to achieve fitting Target workload within the weight amount of MIPS.


We use MIPS to represent the capacity of the zSeries frame or LPAR. Early metrics tended to concentrate on the rate at which a processor executes instructions to represent capacity. One metric of this type is MIPS (millions of instructions per processor second). Although MIPS is used as the term, the measure is not actually millions of instructions per processor second. The value is derived from numbers published by IBM in the Large System Performance Reference (LSPR) table. The default is to use the single image Processor Capacity Index (PCI) value with the average Relative Nest Intensity (RNI) for the hardware. For an LPAR, we divide the total MIPS capacity by the number of physical processors and then multiply by the number of processors defined to the LPAR. You can supply a MIPS table of your own, which might use the results from a zPCR study, which would be more accurate because it takes into account the workload characteristics.

zPCR is a PC-based productivity tool under Windows. It is designed to provide capacity planning insight for IBM System z® processors that are running various z/OS, z/VM®, z/VSE®, Linux, IBM zAware, and CFCC workload environments on partitioned hardware. Capacity results are based on IBM’s most recently published LSPR data for z/OS.

For more information, see the Large Systems Performance Reference for IBM z Systems page (


Monthly License Charge.

For more information, see the IBM z Systems Software Pricing page (


A million service units (MSU) are a measurement of the amount of processing work a computer can perform in one hour. MSU ratings are used for Software Pricing charges.


Refers to software products that are priced using a sub-capacity pricing method. NO89 products do not generate SMF type 89 records, which report on usage by the product over a time interval.


In the Application peak value forecast stream, PEAKRANK is an input parameter that specifies which peak values you want the forecast to support.




Software Cost Analysis.

This feature reports and forecasts software cost based on Sub-Capacity Pricing for z/OS.


User ID.