IBM invested $5 billion in the development of the System/ product line. IBM Mainframe Bits: Understanding the Platform Hardware. Provides an executive overview of new New Mainframe z/OS Basics Mike Ebbers John Kettner Wayne O’Brienz/OS Basics. This IBM® Redpaper™ publication describes the hardware components and three high-level scenarios of how IBM Redbooks Basic mainframe usage and architecture. Tutorials provide hands-on instructions that help developers learn how to use the technologies in