Many organizations make use of IBM software programs and some also struggle with IBM’s licensing scenarios and metrics. IBM provides various different metrics for licensing and measuring usage of its software programs.
The most common used metric is the Processor Value Unit (PVU). A Processor Value Unit (PVU) is a unit of measure used to differentiate licensing of software processor technologies (defined by Processor Vendor, Brand, Type and Model Number). All supported processor technologies by IBM can be found in the PVU Table.
An end user can deploy the IBM software program licensed by Processor Value Unit in two different scenarios:
- Physical Capacity a.k.a. Full-capacity licensing
Virtualization Capacity a.k.a. Sub-capacity licensing
If you decide to license at the full-capacity of a server, you must obtain PVU licenses sufficient to cover all activated processor cores in the physical hardware environment on which the IBM software program is installed.
If you decide to license at the sub-capacity of a server, you must comply with a number of specific Virtualization Capacity License Counting Rules which include the use of IBM’s License Metric Tool (ILMT).
This article provides an introduction about the benefits and drawbacks of ILMT. Further articles on how to install, configure and run software inventory reports in a complete and accurate manner will follow.