5. FILES › 5.3 SCP Information Area Files › 5.3.13 Virtual Storage Private Usage File (SCPVSU) › 5.3.13.3 Usage Considerations

5.3.13.3 Usage Considerations

Special considerations or techniques related to using the
SCPVSU file are provided below.
 1.  The following element in the SCPVSUnn file only has
    meaning when used in the DETAIL timespan, since
    significance is lost once summarization has been
    performed.  In the higher timespans, the data element is
    retained based on the last reference from the file to be
    summarized.

    CYCLETM  - Sampling Time Cycle Length

2.  Care must be exercised in using the special date and time
    data elements contained in each CA MICS file. As the
    file's granularity increases in higher timespans certain
    fields lose significance; they should not be used in
    those cases.

    o  HOUR should not be used in MONTHS.
    o  DAY and DAYNAME should not be used in WEEKS, MONTHS.
    o  WEEK should not be used in MONTHS.

3.  Be aware of the meaning of those data elements that
    represent minimum or maximum values of variables and the
    timestamps for when the minimum or maximum values
    occurred:

    o  A data element that represents the minimum value of a
       variable contains the minimum value for all
       occurrences of that data element in the records
       processed for the summarization level.  This is true
       for all levels above DETAIL.

    o  A data element that represents the maximum value of a
       variable contains the maximum value for all
       occurrences of that data element in the records
       processed for the summarization level.  This is true
       for all levels above DETAIL.

    o  The timestamps for minimum and maximum values are
       intended for detailed analysis of short term trends in
       the usage of virtual storage.  As a result, these
       elements lose most of their significance above the
       DETAIL timespan and are not carried into the DAYS,
       WEEKS, and MONTHS timespans of the CA MICS database.

4.  ENDTS and STARTTS, when appearing in the DAYS, WEEKS, or
    MONTHS timespans, bound the span of time over which the
    data has been summarized.  STARTTS is the lowest date and
    time, while ENDTS is the highest date and time, for the
    data summarized.  The data elements also have different
    meanings when used in the DETAIL timespan versus the
    DAYS, WEEKS, and MONTHS timespans.   Their purpose in
    DETAIL is described below:

    o  STARTTS represents RMF recording interval start time.
    o  ENDTS represents RMF recording interval end time.

5.  The RMF Monitor I VSTOR option, with one or more
    jobnames, must be specified in order for RMF to collect
    data for the SCPVSUnn file.