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Source: VCADAA file at the DETAIL timespan
Function: This chart helps to identify departments or groups
that are wasting DASD storage space due to poor
allocation practices. These problems can be
caused either by allocating more space than is
necessary, or by using an inefficient block size.
The Storage Administrator can analyze either or
both of these causes with the same chart.
Correction of the problems detected by this report
may recover a large amount of storage space with a
small amount of effort.
Features: This chart could be run regularly to monitor
wasted space, with more detailed reporting
occurring when problems are detected. A wide
variety of filtering and reporting options allow
many views of the same data to be obtained. Both
color graphics and printer graphics are supported
for this chart.
SMS
Issues: Users planning for SMS could identify those groups
with the worst space usage values, as they may be
the best candidates for the immediate benefits of
SMS. As groups migrate to SMS control, regular
use of this report would verify that the expected
space savings from SMS are being realized.
COLUMN DESCRIPTIONS
Pie Slices
The pie slices represent the total amount of space
being wasted by the data sets in each
summarization group, in millions of bytes
(megabytes). Depending on the values coded on the
report option screen, this can represent space
wasted due to poor block sizes, space wasted due
to over-allocation, or both.
Pie Labels
The labels on each slice identify the
summarization key for this chart. Depending on
the values specified on the report option screen,
this will represent one or more VCA account
elements, one or more nodes of the data set name,
or will contain a value derived from your Data Set
Group table.
NON-VSAM WASTED SPACE (STGECC) 5 CA MICS StorageMate ABC CORPORATION SYSID=SYS7 SUM PIE CHART OF TOTWASTE GROUPED BY OWNER DISTRIBUTION-LIB ***************.***** ***** . *.*** *** . . *** ** . . *** ** . . *** ** . . ** DEVELOPMENT ** . . *** ** . . ** * 168 . ** * .3.01% ** ** . .. * * . . ** * . . 826 ** * . . 14.80% * * . . * * ... . . * . . . . . * * .. . . . . * * .. . . . * CUSTOMER-SUPPORT * . . . . 271 * MARKETING-SALES * . . 4.85% * * 2971 + . . . . . . . . . . . . . . . . * * 53.22% . * . * * . * * . * * . * * . * * . * * . 1346 ** * . 24.11% ** * . ** * . ** * . ** ** . ** ** . *** SYSTEM-DATA ** . ** ** . *** ** . *** *** . *** ***** . ***** ********** *.******** * WASTED SPACE (MEGABYTES) BY GROUP
Figure 4-53. Non-VSAM Wasted Space / Chart
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