AS400 and IBM i Glossary

IBM's original official brand spelling for the Application System/400 platform introduced in 1988. AS400 is the later slashless shorthand and search form.

The slashless form of IBM's original AS/400 brand name. Not the original official styling, but now the dominant search, typing, and colloquial shorthand for IBM i and IBM Power Systems.

Commercial Processing Workload. IBM's benchmark metric for measuring the relative processing performance of IBM i systems. Used to compare AS400/IBM i hardware generations and models.

The integrated relational database built into IBM i (AS400). DB2 for i is not a separate product ... it is part of the OS. One of the AS400 platform's defining architectural advantages.

The text-based character interface used to interact with AS400 and IBM i systems. Named for the green monochrome display terminals originally used. A key modernization target.

The current official name for the operating system that runs on IBM Power Systems. Successor to OS/400 and i5/OS. The OS lineage of the AS400 platform.

The IBM server hardware platform that runs IBM i (and AIX and Linux). The hardware successor to the AS400, iSeries, and System i platforms.

The brand name IBM used for the AS400 hardware platform from 2000 to 2006. Replaced by System i in 2006 and IBM Power Systems in 2008.

The original operating system for the AS400 platform, released in 1988. Renamed to i5/OS in 2004 and IBM i in 2008. The OS lineage that all IBM i releases trace back to.

A common spaced search and voice-typing version of IBM's Power10 product name. Not IBM's official styling, but widely used by searchers.

A common spaced search and voice-typing version of IBM's Power11 product name. Not IBM's official styling, but widely used by searchers.

A common spaced search and voice-typing version of IBM's Power9 product name. Not IBM's official styling, but widely typed by real users.

IBM's official no-space styling for the 2021 Power generation. Power 10 with a space is a common user-typed variant of the same product family.

IBM's official no-space styling for the 2024 Power generation. Brand-correct in IBM materials, while Power 11 with a space is also common in search and voice typing.

IBM's official no-space styling for the 2017 Power generation. Power 9 with a space is a common search and voice-typing variant of the same hardware family.

IBM's primary programming language for AS400 and IBM i. Report Program Generator, now evolved into a modern structured language (ILE RPG / RPGLE) still in active use.

IBM's brand name for the AS400/iSeries platform from 2006 to 2008. Part of IBM's unified Systems branding. Replaced by IBM Power Systems.