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Source: VCADAA file at the DETAIL timespan
VCA_VS file at the DETAIL timespan
Function: Summarizes the effect of certain space management
actions upon your DASD volumes.
Many automated storage management software
products, such as DFHSM, allow users to delete or
migrate older data sets, and to release unused
space from data sets that have been allocated
incorrectly. This report allows users to simulate
these actions and then tune these threshold values
so that the desired result will be achieved.
Any combination of these different actions can be
simulated--automatic deletion, automatic
migration, and automatic release of over-allocated
space.
Features: Users installing automated storage management
products can choose thresholds that allow them to
start using their new software sooner, without
having an adverse effect on data availability.
Users already using automated products can use the
charts to set new thresholds, or to ensure that
their existing thresholds are effective.
As a user option, VSAM files can be included in
the analysis.
This report would probably be used to approximate
and test the proposed threshold values, and then
more detailed reports would be generated to double
check the effects of these values.
Generation of the summary report is automatic.
SMS
Issues: This report can be used to simulate most of the
actions that are provided through the SMS
management class. This simulation will ensure the
values you specify in your management class
definition will achieve the desired result. After
implementation, the report can be used to monitor
the effect of proposed changes to the management
class definition, before actually making the
change.
COLUMN DESCRIPTIONS
Volume Serial Number
The volume serial number of the storage medium.
Before # DSNs
The number of data sets on this volume that were
considered candidates for simulation. Any data
sets excluded by filtering criteria on the report
option
screen will not be included in this number. These
will be referred to through the rest of this
description as the candidate data sets.
Before # Trks
The number of tracks on the volume that were
allocated by the candidate data sets. Any data
sets excluded by filtering criteria on the report
option screen will not be represented by this
number. These will be referred to through the
rest of this description as the candidate tracks.
Deletion Actions - # Data Sets
The number of data sets on this volume that would
have been deleted using the deletion thresholds
you supplied on the report option screen.
Deletion Actions - % Data Sets
The percentage of candidate data sets on this
volume that would have been deleted using the
deletion thresholds you supplied on the report
option screen. This is calculated by dividing the
number of potentially deleted data sets by the
number of candidate data sets.
Deletion Actions - # Tracks
The number of tracks on this volume that would
have been freed due to the simulated data set
deletion.
Deletion Actions - % Tracks
The percentage of tracks on this volume that would
have been freed due to the simulated data set
deletion. This is calculated by dividing the
number of potentially freed tracks by the number
of candidate tracks.
Migration Actions - # Data Sets
The number of data sets on this volume that would
have been migrated using the migration thresholds
you supplied on the report option screen.
Migration Actions - % Data Sets
The percentage of candidate data sets on this
volume that would have been migrated using the
migration thresholds you supplied on the report
option screen. This is calculated by dividing the
number of potentially migrated data sets by the
number of candidate data sets.
Migration Actions - # Tracks
The number of tracks on this volume that would
have been freed due to the simulated data set
migration.
Migration Actions - % Tracks
The percentage of tracks on this volume that would
have been freed due to the simulated data set
migration. This is calculated by dividing the
number of potentially freed tracks by the number
of candidate tracks.
Release Actions - # Data Sets
The number of data sets on this volume that would
have had their excess space released using the
release thresholds you supplied on the report
option screen.
Release Actions - % Data Sets
The percentage of candidate data sets on this
volume that would have had space released using
the release thresholds you supplied on the report
option screen. This is calculated by dividing the
number of potentially released data sets by the
number of candidate data sets.
Release Actions - # Tracks
The number of tracks on this volume that would
have been freed due to the simulated partial space
release.
Release Actions - % Tracks
The percentage of tracks on this volume that would
have been freed due to the simulated partial space
release. This is calculated by dividing the
number of potentially freed tracks by the number
of candidate tracks.
Total Space Freed - # Data Sets
The number of data sets on this volume that would
have been altered due to the simulation thresholds
you supplied on the report option screen. This
column should reflect the total number of data
sets that would have been deleted, migrated, or
had a portion of their space released.
Total Space Freed - % Data Sets
The percentage of candidate data sets on this
volume that would have been modified using the
simulation thresholds you supplied on the report
option screen. This is calculated by dividing the
number of potentially altered data sets by the
number of candidate data sets.
Total Space Freed - # Tracks
The number of tracks on this volume that would
have been freed due to the simulated actions you
specified, either through data set deletion,
migration or partial space release.
Total Space Freed - % Tracks
The percentage of tracks on this volume that would
have been freed due to the simulated deletion,
migration and release actions. This is calculated
by dividing the number of potentially freed tracks
by the number of candidate tracks.
SPACE MANAGEMENT FUNCTION SIMULATION (STGEJB) 1 CA MICS StorageMate - SUMMARY ABC CORPORATION ----------------------------------------------------- System Identifier=SYS7 ----------------------------------------------------- Volume +-- BEFORE --+ +- DELETION ACTIONS -+ +- MIGRATION ACTIONS -+ +- RELEASE ACTIONS -+ +- TOTAL SPACE FREED -+ Serial # # Data Sets Tracks Data Sets Tracks Data Sets Tracks Data Sets Tracks Number DSNs Trks # % # % # % # % # % # % # % # % LNR900 504 12785 17 3 390 3 99 20 1855 15 13 3 57 0 129 26 2302 18 LNR901 555 12246 88 9 1087 9 181 33 1625 13 19 3 59 0 288 52 2771 23 LNR902 348 12710 13 4 504 4 90 26 3017 24 13 4 54 0 116 33 3575 28 ------ ----- -------- ---- --- ------- --- ---- --- ------- --- ---- --- ------ --- ---- --- ------- --- SYSID 1407 37741 118 8 1981 5 370 26 6497 17 45 3 170 0 533 38 8648 23
Figure 4-65. Space Management Function Simulation / Summary
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