I/O Connectivity

FICON Support of Cascaded Directors

With FICON support of cascaded switches and directors, a FICON channel or a FICON CTC (defined as CHPID type FC) can connect a server to a device or other server using two (same vendor) directors providing high availability, business resilience, as well as a fiber optic infrastructure cost savings and improved utilization for cross-site connectivity – reducing channel requirements and configuration complexity. This support is for a two-switch, single-hop configuration only. For a complete list of supported directors and switches, visit the System Storage Interoperation Center (SSIC) page.

FICON Support of cascade Directors graphic.

Refer also to IBM System z Business Resilience solutions including IBM Parallel Sysplex® technology, IBM Capacity on Demand, and IBM GDPS®.

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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.

Operating Systems

IBM System z supports multiple operation systems:


IBM's technology, solutions and industry expertise can help you find the competitive edge with a sharper understanding of your customers. Our System z solutions combine the foundation of IBM hardware, software and middleware with flexible financing and packaging options to help your business meet and overcome the challenges of doing business in the on demand world. IBM can help you develop a customer-centric view—and assist you in delivering the right solution and the right products.


Do you have questions about the new I/O functionalities?


Do you have the appropriate FICON jumpers, patch cables, and conversion kits for your server? For all your cabling needs see the System z Fiber Cabling Services in the IBM Resource Link Services section (registration required)

IBM education

Are you ready for FICON? Learn about FICON Planning, Operation, Implementation, and Problem Determination, Course #ES326