IBM i

OS400 (previously referred to as i5/OS) has a new name as of 2 April 2008: IBM i is the operating system that runs on Power Systems hardware (previously called iSeries) and the thing that makes it the unique system it is. See OS/400 101 Introduction.

IBM has created a logo for IBM i:

IBM i includes a very robust variation of the DB2 database.

Generally, IBM i is accessed using a 5250 emulator.

Contrary to popular belief, IBM i provides a large number of "Open" resources common on other systems, in addition to a few IBM-only 400 languages and database tools.

• Java
• Apache Web server
• Posix compliant API's accessible from many programming languages.
• PHP

Originally OS/400, meaning Operating System 400, was for the AS/400, meaning Advanced System 400.

Then IBM came out with variants and re-inventing renaming ... see Names ... such as the AS/36 Advanced System 36, which offered an advanced version of S/36 OS SSP running on the AS/36 one of two flavors:

• M36 Machine 36, which was later discontinued, and
• S36 Environment 36 on the 400.

See also

• History of OS/400

External links

• Market size estimating at IT Jungle
• Wikipedia:OS/400
• OS/400 Release Life Cycle table
• i5/OS and OS/400 Release Upgrade and Support table
• System i/i5/iSeries/AS/400 RISC Model to OS Level Mapping