By IBM Redbooks
This IBM Redbook offers scholars of data structures expertise with the historical past wisdom and abilities essential to start utilizing the elemental amenities of a mainframe computing device. it's the first in a deliberate sequence of textbooks designed to introduce scholars to mainframe techniques and aid organize them for a profession in huge structures computing.
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Explain how Parallel Sysplex can achieve continuous availability. Explain dynamic workload balancing. Explain the single system image. © Copyright IBM Corp. 2006. All rights reserved. ” Related reading: For detailed descriptions of the major facilities of z/Architecture, the book z/3 Principles of Operation is the standard reference. com/servers/eserver/zseries/zos/bkserv/ Let’s begin this chapter with a look at the terminology associated with mainframe hardware. Being aware of various meanings of the terms systems, processors, CPs, and so forth is important for your understanding of mainframe computers.
The New Mainframe and its associated software have evolved to the point that customers often experience months or even years of system availability between system downtimes. Moreover, when the system is unavailable because of an unplanned failure or a scheduled upgrade, this period is typically very short. The remarkable availability of the system in processing the organization’s mission-critical applications is vital in today’s 24-hour, global economy. Along with the hardware, mainframe operating systems exhibit RAS through such features as storage protection and a controlled maintenance process.
13 Topics for further discussion 1. What is a mainframe today? How did the term arise? Is it still appropriate? 2. Why is it important to maintain system compatibility for older applications? Why not simply change existing application programming interfaces whenever improved interfaces become available? 3. Describe how running a mainframe can be cost effective, given the large number of roles needed to run a mainframe system. 32 Introduction to the New Mainframe: z/OS Basics 4. What characteristics, good or bad, exist in a mainframe processing environment because of the roles that are present in a mainframe shop?