5. FILES › 5.2 HAR Information Area Files › 5.2.17 Cache Control Unit Activity File (HARCCU)

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5.2.17 Cache Control Unit Activity File (HARCCU)



The Cache Control Unit Activity file quantifies caching
activity at the subsystem level.  The caching activity for
all volumes attached to the control unit is summarized in
this file.  It also contains device independent information
concerning the overall caching subsystem.
 
The information in the HARCCU file is obtained from the
cache subsystem device activity section of the SMF type 74
subtype 5 record written by RMF Monitor III.

The following sections describe the file's organization, list
the data elements maintained, and provide usage hints.

    1 - File Organization
    2 - Data Elements List
    3 - Usage Considerations