Why Linux on Z Mainframe?

The Linux® operating system benefits from the IBM mainframe’s capabilities and strengths.

With Linux on the new IBM z15 and LinuxONE III, you can transform your application and data portfolio with innovative data privacy, security, and cyber resiliency capabilities – all delivered through a hybrid cloud.

Explore open source and IBM software

Run open source software on IBM Z® and LinuxONE for optimal security, performance and scalability.

Discover Linux for Z distribution partners

Linux on IBM Z and LinuxONE offer IBM-tested and the certified Linux environments of the distribution partners including Red Hat, SUSE and Canonical (Ubuntu).

See what’s new

Red Hat® OpenShift® and IBM Cloud Paks™

Now you can develop and deploy cloud native applications faster and more effectively on IBM Z and LinuxONE.

Hear from customers

The ability to run our legacy applications and our modern, specialist ones using both the IBM z/OS and Linux on Z is super convenient, and gives us a high degree of IT management flexibility.

Justin Randall, Technical Services Supervisor, NCFB

Supreme Court of Virginia

Higher performance with fewer compute resources.


Superb scalability and reliability with low TCO keeps clients happy.

TES Enterprise Solutions

Red Hat OpenShift support significantly increases options for cloud integration

IBM Live virtual classes

Learn about Linux on Z, z/VM, IBM Wave for z/VM, KVM on Z and more.

IBM training for Linux and z/VM

IBM training and skills

Get training in your preferred format through the IBM Skills Gateway.

IBM Systems Lab Services

Experienced consultants with proven expertise help you design and deliver highly available Linux, z/VM, and KVM infrastructure solutions.

IBM Technology Support Services (TSS)

Skilled Linux support specialists offer how-to, usage, installation, compatibility and troubleshooting support.

IBM open source support

Our Linux distribution partners provide support for their distributions.

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Linux processors

Learn about this dedicated Linux processor.

IBM Cloud Paks™

A faster, more reliable way to modernize and move to the cloud.