December 2006
Intermediate to advanced
228 pages
6h 20m
English
book
Introduction to the New Mainframe: Large-Scale Commercial Computing
by Mike Ebbers, Pilar Gonzalez Adrados, Frank Byrne, Rodney Martin, Jon Veilleux
Content preview from Introduction to the New Mainframe: Large-Scale Commercial Computing
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70 Introduction to the New Mainframe: Large-Scale Commercial Computing
4.2.2 Data Facility Storage Management Subsystem (DFSMS)
DFSMS, or SMS for short, is the component of the operating system that controls
all data set allocation and provides automatic backup for the data. Data Facility
Product (DFSMSdfp™) is the heart of the storage management subsystem; it
provides the logical and physical input and output for z/OS storage, keeps track
of all data and programs managed within z/OS, and provides data access both
for native z/OS applications and other platforms.
By controlling the devices on which data can be allocated, SMS can control the
characteristics of the data. By moving critical data to devices with faster access,
SMS can improve the ...
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