John has been working on IBM mainframe system for 42 years. He started in operations, quickly moved to systems programming and has spent the last 33 years in systems software development working on disaster recovery products, and transparent data migration, encryption and cloud related products . He is currently the 21st Century Senior Product Manager for storage products and continues to code and learn concepts on z/OS. He is familiar with most DADSM, DFSMS, catalog, and I/O structures and has multiple IBM patents with a 21CS patent pending.
Email: johnh@21csw.com