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 Inside the IBM S/390 Parallel Enterprise Server Generation 4 | |
| Manufacturer | International Business Machines Corporation (IBM) |
|---|---|
| Type | mainframe (S/360-compatible) |
| Release date | September 5, 1990 |
| Discontinued | December 31, 2004[1] |
| Operating system | MVS/ESA, OS/390, VSE/ESA and VM/ESA |
| Memory | ES/9000: up to 2 GB main + 8 GB expanded 9672: up to 32 GB main (2 GB flat) |
| Predecessor | IBM 3090, 4300 and 9370 |
| Successor | IBM Z |
| Website | Official website IBM Archives "System/390 Announcement". IBM Archives. IBM. 23 January 2003. Archived from the original on January 16, 2005. Retrieved 2017-01-29. |
The IBM System/390 is a discontinued mainframe product family implementing ESA/390, the fifth generation of the System/360 instruction set architecture. The first computers to use the ESA/390 were the Enterprise System/9000 (ES/9000) family, which were introduced in 1990. These were followed by the 9672, Multiprise, and Integrated Server families of System/390 in 1994–1999, using CMOS microprocessors. The ESA/390 succeeded ESA/370, used in the Enhanced 3090 and 4381 "E" models, and the System/370 architecture last used in the IBM 9370 low-end mainframe. ESA/390 was succeeded by the 64-bit z/Architecture in 2000.
- ^ "Family 9672+07 IBM S/390 Generation 6 Servers: Engines for e-business". IBM. 22 September 2010.