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 Corp. today announced plans to release a promised 64-bit version of its mainframe operating system later this week — a move that users and analysts said should provide a crucial foundation for ...

IBM continues to fine-tune its mainframe to keep it attractive to enterprise users interested in keeping the Big Iron in their cloud and AI-application development plans. The company released a new ...

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 ...