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Source: VCADAA file at the DETAIL timespan
Tape library information (external)
Function: Identifies common patterns of data set attributes
within your non-VSAM data sets. This is useful in
identifying data sets with similar attributes that
may have similar processing requirements.
This report also helps identify groups of data
sets that have been allocated with attributes that
may cause performance problems or poor space
utilization.
Features: Users can choose to ignore data set block size
when grouping, as this may not be important when
using automated software that does automatic
reblocking.
Users can also choose to drop those groups from
the report that represent a small percentage of
their total data sets.
Generation of the summary report is automatic.
SMS
Issues: After running this summary report, three
additional reports that expand on the information
presented in this summary can be requested.
SMS allows similar data sets to be managed under
one Data Class, and this report helps you identify
and define those classes.
You can easily determine the most common groups of
data sets, thus allowing data sets in those groups
to be automated quickly. The planning information
provided by the report allows group definitions to
be made with less chance of error.
COLUMN DESCRIPTIONS
Report Group
Represents a group of data sets that have
identical attributes, as defined by the columns
'DSORG' through 'Retention Period' on each report
line. Report Group is important, as it is used in
all other Non-VSAM Attributes reports to refer to
this common group of data sets. The number of
report groups is determined by the characteristics
of the data analyzed, as well as by values entered
on the report option screen.
Number of Data Sets
The number of data sets within the data analyzed
that contained attributes identical to those
defined by this group.
Percent of All Data Sets
The percentage of data sets within the data
analyzed that were assigned to this report group.
Note that any data sets excluded by filtering
values on the report option panel are not included
when calculating this percentage.
DSORG
The organization of the data within the data set.
Note that all the data sets assigned to this
report group have the data set organization listed
under this column. A value of 'PS' will always
appear for tape data sets.
BLKSIZE
The maximum length of a physical block written
into this data set. Note that all the data sets
assigned to this report group have the block size
listed under this column. A value on the report
option screen allows this value to be set to zero
for all data sets, so that block size will not be
a factor when grouping. If all values under this
column are zero, that option was probably used.
LRECL
The maximum length of each logical record in this
data set. Note that all the data sets assigned to
this report group have the logical record length
listed under this column.
RECFM
Note that all the data sets assigned to this
report group have the record format listed under
this column. If the option was chosen on the
report options screen to ignore block size when
grouping, all 'B' (Blocked) values will be removed
from RECFM, and will not be listed on this report.
Relative Key Position
The relative position of the first byte of the key
within the logical record for ISAM files. Note
that all the data sets assigned to this report
group have the same relative key position listed
under this column. This value will always be zero
for tape data sets.
Key Length
The length of the key associated with each data
block in a keyed data set. Note that all the data
sets assigned to this report group have the same
key length listed under this column. This value
will always be zero for tape data sets.
Retention Period
The retention period specified for all the data
sets assigned to this report group. While
retention period is not reported directly in the
input data, it can be computed by subtracting the
date the data set was created from its expiration
date. If no expiration date was specified, the
retention period will be set to zero. Note that
you have the option to set this to zero when using
tape data sets.
Average Data Set Size (KB)
The average size, expressed in thousands of bytes
(kilobytes), of all data sets in this reporting
group. This is calculated by taking the total
amount of tracks allocated by all data sets in
this group, and dividing it by the number of data
sets. This value can be useful when trying to set
a default amount of space that could be assigned
to the data sets in this group.
Minimum Data Set Size (KB)
The smallest amount of space allocated, expressed
in thousands of bytes (kilobytes), detected for
all of the data sets in this reporting group. A
value of zero indicates that at least one data set
in the group is allocated with zero extents and
is, therefore, using no space for that data set.
This value can be useful when trying to set a
default amount of space that could be assigned to
the data sets in this group.
Maximum Data Set Size (KB)
The largest amount of space allocated, expressed
in thousands of bytes (kilobytes), detected for
all of the data sets in this reporting group.
This value can be useful when trying to set a
default amount of space that could be assigned to
the data sets in this group.
NON-VSAM ATTRIBUTES (STGEFB) 1 CA MICS StorageMate - SUMMARY ABC CORPORATION Report Number Percent DSORG BLKSIZE LRECL RECFM Relative Key Retention Average Minimum Maximum Group of of All Key Length Period Data Set Data Set Data Set Data Sets Data Sets Position Size(KB) Size(KB) Size(KB) 1 2936 38.9 PS 0 2048 FS 0 0 0 803 57 67543 2 2333 30.9 PO 0 80 F 0 0 0 5822 47 1068188 3 1162 15.4 PO 0 0 U 0 0 0 8304 47 1393063 4 268 3.5 PS 0 80 F 0 0 0 6526 0 730938
Figure 4-49. Non-VSAM Attributes / Summary
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