2 DASD Cylinders Tracks Whats It All About
Project and Program:
Storage Management,
Core Platforms
Tags:
Proceedings,
2025,
SHARE Cleveland 2025
The z/OS disk storage environment has a long, complex, and esoteric history that
can be confusing, frustrating, and even intimidating to new users coming from
other platforms. Yet tracks, cylinders, and especially extents, are still
important to z/OS users and storage admins. In this session, we'll try to
demystify z/OS disk storage, starting with discussion of the 'round, brown,
spinning' physical hardware of old up to the automated, virtualized, solid-state
and cloud environment of today and its importance to applications.
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