History of OS/400

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Revision as of 14:55, 21 August 2007 by MrDolomite (talk | contribs) (Release life cycle: add table of complete history with dates from IBM)
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The operating system, like the hardware of the midrange family, has changed significantly since its release on August 26, 1988 as OS/400 Release 1. The latest version is known as i5/OS V5R4 and was released to general availability on February 11, 2006.

Predecessors

Release life cycle

Release Announce
date
GA
date
Announce
end of marketing
Effective
end of marketing
End of
program
support
Program
support
extension
available
Rel 1 06/21/1988 08/26/1988
V2R1 04/22/1991 05/24/1991 03/12/1993 06/30/1994

Current releases

Previous release support

Values for TGTRLS parameter

Installed
release
*CURRENT *PRV Other valid values
V5R3 V5R3M0 V5R2M0 V5R1M0 V5R2M0 V5R3M0
V5R2 V5R2M0 V5R1M0 V5R1M0 V5R2M0 [verification needed]
V5R1 V5R1 V4R5 V4R4
V4R5 V4R5M0 V4R4M0 V3R2M0 V4R2M0 V4R3M0 V4R4M0 V4R5M0
V4R4 V4R4 V4R3 V4R2 V3R2
V4R3 V4R3 V4R2 V4R1 V3R7 V3R2
V4R2 V4R2M0 V4R1M0 V3R2M0 V3R7M0 V4R1M0 V4R1M4 V4R2M0

iSeries - AS/400 RISC Model to OS Level Mapping

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