2. PERFORMANCE REPORTING ANALYSIS › 2.3 Auxiliary Storage Management Analysis › 2.3.2 Usage Guidelines

2.3.2 Usage Guidelines

The Auxiliary Storage Management Analysis inquiries provide
two basic reports that use data from the MVS Page/Swap Data
Set Activity File (SCPPSD) and the Device Activity File
(HARDVA) to report on the utilization and overall response
given by the ASM configuration.  These reports allow tracking
of the ASM configuration on an hourly, daily, weekly, or
monthly basis if the SCPPSD and HARDVA Files are supported in
the CA MICS database at the appropriate levels of
summarization.

This section applies the ideas discussed in Section 2.3.4,
MVS Concepts, to these environments, discusses minimal ASM
configurations, and gives some basic recommendations.  As
with all recommendations, these must be considered as they
apply to your specific environment.  If you are not familiar
with the terminology and concepts associated with the
Auxiliary Storage Manager, you may find it helpful to read
Section 2.3.4 before continuing with this section.

All the  recommendations  given here or in any of the
references are to be considered only as they apply to your
environment, not as strict rules.

To aid in evaluating the response and utilization levels of
the ASM configuration, the Auxiliary Storage Management
Analysis reports allow data describing the ASM configuration
to be viewed for individual page or swap data sets, by data
set class (e.g., pageable link pack area (PLPA), common,
local, or duplex), or by device type (e.g., 3380s).

The following sections present ASM configuration guidelines,
an example on sizing data sets, and considerations on using
specific device types.

    1 - ASM Configuration Tuning
    2 - ASM Data Set Sizing