6. DATA SOURCES › 6.6 I/O Measurements and Device Activity

6.6 I/O Measurements and Device Activity

I/O is one of the major resources of an I/S facility.
Effective management of the I/O resources requires a clear
understanding of what I/Os are and what measurements are
available to analyze the use of this resource in the SMF data
records.

The CA MICS Batch and Operations Analyzer provides many I/O
measurement data elements in the Batch Information Area
files.  This section will explain what measurements quantify
use of the I/O resource and how these measurements are
captured.

    1 - What Is an I/O?
    2 - EXCP and Other Access Methods
    3 - I/O Measurements
    4 - Device Activity and Utilization