History of OS/400
From MidrangeWiki
Revision as of 14:58, 21 August 2007 by MrDolomite (talk | contribs) (→Release life cycle: change data entry layout, add V2R2)
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.
Contents
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 | |||
| V2R1.1 | 04/22/1991 | 03/06/1992 | 03/12/1993 | 06/30/1994 | |||
| V2R2 | 02/18/1992 | 09/18/1992 | 09/16/1994 | 03/31/1995 |
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 |
- from PDF
