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IBM LinuxONE III server

The IBM LinuxONE III is a single-, multi-, or rack mount mainframe featuring up to 190 cores and 40 TB of memory. It is superseded by the LinuxONE 4.

Designed through collaboration with clients and IBM Research and Development, the IBM LinuxONE III delivers an open, secure cloud platform. Inherit the built-in security of IBM zSystems™, and containerize your application development with the Red Hat® OpenShift® platform or a Linux® distribution of your choice. Elevate your enterprise-wide cloud infrastructure with a LinuxONE III system that provides security, privacy and resiliency at scale.

Discover an enterprise-grade Linux server with a unique architecture.
Benefits Cloud native

Consistently develop, deploy and orchestrate next-gen apps. Build new digital services that are developed once and deployed across your cloud.

Encryption everywhere

The ideal platform for sensitive data and critical applications in the cloud, LinuxONE III can protect your data and manage privacy by policy across your ecosystem.

Cyber resilience

Minimize the impact of internal and external attacks by isolating workloads to ensure continuous service.

Flexible compute

Take advantage of a platform available to businesses of all sizes, from startups to the largest enterprise. Choose public, private or hybrid cloud.

Features Developers can build and modernize new applications using the open-source tools they love, on a platform purpose-built for cloud with Red Hat OpenShift and IBM Cloud Pak®. Watch the video (02:30) Keep data protected and private with encryption everywhere

Manage data privacy by policy and keep data – at rest and in flight — protected from internal and external threats with IBM Hyper Protect Data Controller.

Watch the video (00:57)
Go years between downtime with cyber resilience

Customers require 24x7 availability and the best security. Securely scale up to thousands of workloads isolated from threats with the new IBM Secure Execution for Linux.

Watch the video (02:17)
Deploy compute resources flexibly and on demand

A platform for the modern data center and your business, regardless of size and capacity needs, with flexible consumption models, on-chip compression and a lower footprint.

Watch the video (01:45)
Case studies Sagicor
Accelerating processes by optimizing core banking.
Nowy Styl
Accelerating processing performance with style through smart system consolidation.
Phoenix Systems
Turning myth into reality by blending the convenience of public cloud with unprecedented security.
Compare models

Compare the IBM LinuxONE III single-frame and multi-frame systems that deliver security, privacy and resiliency at scale as part of your enterprise-wide cloud infrastructure.

Product specifications

IBM LinuxONE III Express

Built to deliver performance, availability, scalability, and security in a simplified, pre-configured model that is deisgned for datacase consolidation.


Built for high-capacity workloads and designed for demanding data security needs, the multi-frame model brings privacy and resiliency to your hybrid cloud.


The air-cooled, single frame model extends next-level security, data privacy, and resiliency to any hybrid cloud, designed for buisnesses of all sizes. 

HW Configuration

Single configuration

Custom configuration

Custom configuration


348GB - 768GB




4 - 12

1 - 190

1 - 65

Data sheets

Interactive tour

Hardware pricing

Starting at USD 135.0001

IBM LinuxONE Expert Care is available for all LinuxONE iii systems

Explore IBM Expert Care 

Related products IBM LinuxONE 4
A highly secure, scalable server platform to help you achieve lower energy costs and a smaller carbon footprint.
The fases more reliable and secure storage system for IBM LinuxONE, IBM zSystems and IBM Power systems.
IBM Hyper Protect Virtual Servers
Securely build, deploy and manage mission-critical applications for hybrid multicloud environments on IBM zSystems and LinuxONE systems.
IBM WebSphere® Hybrid Edition
Discover how to drive cloud-native development, application modernization and support for existing applications with IBM WebSphere® Hybrid Edition.
IBM z16™
Accelerate decision velocity, protect against threats across your business and modernize for hybrid cloud with IBM z16.
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Get started with LinuxONE. Find technical information and learn about buying and installation.

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More ways to explore Support: LinuxONE III LT2 Community Redbooks Support: LinuxONE III LT1 Developer community Global financing Warranty and maintenance G2 product reviews TrustRadius reviews Documentation