&sq=&lang=&file=File:Wiki_letter_w.svg){kind=small} | This article's lead section may be too short to adequately summarize the key points. (September 2024) |
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| Developer | IBM |
|---|---|
| OS family | VM family |
| Working state | Current |
| Source model | 1972–1986 Open source, 1977–present Closed source |
| Initial release | 1972 |
| Latest release | IBM z/VM V7.3 / September 16, 2022 |
| Marketing target | IBM mainframe computers |
| Available in | English |
| Platforms | System/370, System/390, zSeries, IBM zEnterprise System |
| License | 1972–1981 Public domain, 1976–present Proprietary |
| Official website | www |
| History of IBM mainframe operating systems |
|---|
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VM (often: VM/CMS) is a family of IBM virtual machine operating systems used on IBM mainframes System/370, System/390, zSeries, System z and compatible systems, including the Hercules emulator for personal computers.