Upgrades of mainframe operating systems don’t usually generate much excitement. But users say IBM’s z/OS – the new version of OS/390, introduced in October of last year – is different. Not only does ...

IBM has announced IBM z/OS V2.5, the next-generation operating system (OS) for IBM Z, designed to accelerate client adoption of hybrid cloud and AI and drive application modernization projects.

PSI counters that its patented technology enables standard, open-system Itanium processors to run the IBM z/OS operating system IBM Corp. says a Sunnyvale, California, company has infringed its ...

In a lawsuit, IBM alleges that the mainframe "emulator systems" offered by Platform Solutions Inc. violate IBM patents on its z/OS operating system as well as patents relating to its previous ...