IBM provides world-class IBM mainframe technology to help today's enterprises respond quickly to evolving business conditions and with extreme flexibility. From automation to advanced virtualization technologies and open industry standards, IBM mainframes help deliver competitive advantages for enterprises contributing and succeeding on a smarter planet

IBM System z9 Business Class

The IBM System z9™ Business Class (z9 BC) provides an advanced combination of reliability, availability, security, scalability and virtualization. The z9 BC is designed specifically as a midrange mainframe and delivers extensive growth options and excellent price/performance for those customers requiring a lower-capacity entry point and more granular growth options than offered with the System z9 Enterprise Class.

IBM System z9 Enterprise Class (z9 EC) (formerly z9-109)

For over 4 decades, the IBM mainframe has been a leader in data and transaction serving. The System z9™ EC provides a strong combination of past mainframe characteristics, plus new functions designed around scalabilityincluding flexible granularity solutions, virtualization, availability, and security. And the z9 EC continues to extend and support the use of dedicated processors for specialized workloads, including the System z9 Application Assist Processor (zAAP), Integrated Facility for Linux® (IFL), Internal Coupling Facility (ICF) and System z9 Integrated Information Processor (zIIP).

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Martin Lagerberg

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Browse z Systems


Infrastructure matters. Businesses turn to the IBM mainframe for unmatched security, operational efficiency, speed, seamless scale, and lower cost per transaction. The IBM z System, the world’s premier data and transaction engine, is enabled for mobile, integrates transactions and analytics, and delivers efficient and trusted clouds.


IBM z Systems combine leading-edge innovation and unparalleled capabilities to power cloud, business analytics, mobile applications, and the most important workloads.

Operating Systems

IBM z Systems supports multiple operation systems:

Through its hybrid computing capability, IBM z Systems with IBM z BladeCenter® Extension (zBX) also supports IBM® AIX® on Power, Microsoft Windows® and Linux® on System x®

zEnterprise Virtual Event Series

Bloggers Perspective on the zEnterprise 114

IBM System z Community

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Accelerate your move to zEnterprise

Accelerate your zEnterprise move and savings with IBM Global Financing