Big Blue is to release z/OS, its z900 mainframe operating system upgraded to take advantage of the new model's 64-bit design.

The new z/OS operating system was originally detailed last fall, when IBM introduced its z900 line of mainframes supporting up to 16 64-bit processors. The software is IBM’s first 64-bit ...

The software is IBM’s first 64-bit mainframe operating system and includes several new capabilities designed to make it easier and less expensive for users to run big-iron boxes.

SHARE’s new President’s Corner blog post describes this improvement pattern by observing what IBM does in each successive release of its z/OS operating environment. In only a few months the mainframe ...

Most notably, IBM has been rolling out IBM Wazi Developer for Red Hat CodeReady Workspaces, a cloud-native development experience for its venerable z/OS mainframe operating system.

Back in that 3270 era, IBM attempted to make the mainframe part of a collection of its computing equipment with a series of operating systems (remember OS/2?) and a set of peer-to-peer protocols ...

Big Blue is dropping customer support for the mainframe operating system OS/390 version 2.10 at the end of September and is urging customers to upgrade to z/OS version 1.4.

IBM z/OS mainframe operating system gets AI, cloud infusion with software coming Sept. 29.

Building upon the already robust record of the mainframe and the z/OS operating system, IBM z/OS 2.3 provides enhanced data protection for z/OS data.

IBM recently announced the release of version 2.5 of its z/OS mainframe operating system. The latest version of z/OS is, according to IBM, “designed to accelerate client adoption of hybrid cloud ...

In its second major patent enforcement action in as many months, IBM is suing an Intel-backed maker of computers that use a version of IBM's high-end mainframe operating system reconfigured to run ...

A manufacturer of mainframe "emulator systems" has filed a countersuit against IBM, claiming that IBM is using its heft to illegally put a stranglehold on the high-end computing market.