Sub-capacity licensing lets you license an eligible software product for less than the full capacity of your server or group of servers. It provides the licensing granularity needed to leverage various multi-core chip and virtualization technologies. For an overview and Q&A describing sub-capacity licensing and PVU licensing see the links on the right hand navigation bar under Essentials
The sub-capacity software licensing terms are documented in the International Passport Advantage Agreement (IPAA). For this Agreement and Virtualization Capacity License Counting Rules using Eligible Virtualization Environments, see the links on the right under Essentials.
A summary of the sub-capacity licensing requirements and a description of PVU full capacity and sub-capacity licensing follows.
PVU full-capacity and sub-capacity licensing
Processor Value Unit (PVU) is a unit of measure by which the Program can be licensed. The number of PVU entitlements required is based on the processor technology defined within the PVU Table by Processor Vendor, Brand, Type and Model Number and by the number of processors made available to the Program. IBM continues to define a processor, for the purpose of PVU-based licensing, to be each processor core on a chip. A dual-core processor chip, for example, has two processor cores.
The Licensee can deploy the Program using either Full Capacity licensing or Virtualization Capacity (Sub-Capacity) licensing according to the Passport Advantage Licensing Terms. If using Full Capacity licensing, the Licensee must obtain PVU entitlements sufficient to cover all activated processor cores* in the physical hardware environment made available to or managed by the Program, except for those servers from which the Program has been permanently removed. If using Virtualization Capacity licensing, the Licensee must obtain entitlements sufficient to cover all activated processor cores made available to or managed by the Program, as defined according to the Virtualization Capacity License Counting Rules .
* An Activated processor core is a processor core that is available for use in a physical or virtual server, regardless of whether the capacity of the processor core can be or is limited through virtualization technologies, operating system commands, BIOS settings, or similar restrictions.
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