How MVS Manages User Data - IBM Mainframe

MVS provides a variety of facilities that let you manage data that resides on tape, DASD, and other I/O devices. You must possess a basic understanding of MVS data management facilities from the start. So, this section introduces you to the basic concepts of MVS data management—how data sets are stored on tape and DASD, how data sets are processed by user jobs and programs, and how a new feature of MVS/ESA called the Storage Management Subsystem affects the way data sets are managed.


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