The IBM System z9 Business Class (z9 BC) is the latest member of the System z9 family. The 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 (z9 EC).

For over four 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 scalability – including flexible granularity solutions, virtualization, availability and security. And the z9 EC continues to extend and support the use of dedicated processors for specialised 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).