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3. CAPACITY PLANNING DATABASE

 
The CA MICS Capacity Planner enables analysts to create a
capacity planning database that is derived from, but
independent of, the CA MICS database. This database satisfies
the long-term historical requirements for forecasting
workloads and resource utilization without retaining
unnecessary data.

The most fundamental technique employed by capacity planners
is the analysis of historical data describing workload
resource consumption, system service levels, and system
component utilizations.  Although the CA MICS database
contains a wealth of these data elements, the collection of
such an historical series from multiple cycles of the CA MICS
database (while operationally trivial) requires significant
CPU resources.  Moreover, it may be infeasible to retain a
significant number of cycles of the DETAIL, DAYS, WEEKS,
and/or MONTHS timespans for capacity planning because of the
DASD space required.  To minimize these resource
requirements, the concept of a specialized capacity planning
database was developed.

We supply interactive screens with the CA MICS Capacity
Planner that allow you to define any number of capacity
planning files within the capacity planning database.   These
files contain the various data elements that the capacity
planner finds useful and has selected and/or computed from a
variety of files in the CA MICS database. These files are
then used as input to Presentation Graphics, Profile and
Trending Analysis, Simple Regression Analysis, Univariate
Model Forecasting, Capacity Planning Worksheet, Multivariate
Regression Forecasting, and Business Element Forecasting
facilities of the CA MICS Capacity Planner. These facilities
are discussed in Chapters 4 through 10.

The following sections describe the operation and reporting
facilities of the CA MICS Capacity Planner Products's
database system.

This section contains the following topics:

3.1 Structural Description

3.2 Usage Guidelines

3.3 Resource Element Files

3.4 Meta Files

3.5 Business Element Files