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Source: VCAVOA file at the DETAIL timespan
HARDVA file at the DAYS timespan
Function: Concisely summarizes performance and capacity
information at the volume group level.
Many installations tend to pool or group volumes
with similar attributes and functions. This
pooling can be done manually, or with automated
software products. Regardless of the method
chosen, this report makes it easier to monitor and
tune these groups as all reporting is done at the
group level rather than at the individual volume
level. This makes it easy to monitor the
performance and availability of the entire group,
or to compare service between groups.
This summary report produces the same totals as
the detail report, but omits individual totals for
each volume within the group. It is suggested
that you use this report for regular monitoring of
your groups, and then run the detail report when
potential problems are detected.
Users planning for products that do automatic
volume pooling can use this report to simulate
various groupings in order to find the combination
that provides optimum performance and
availability.
Features: For SMS users, grouping for this report is
automatically done based on the storage group
assigned to each volume.
For non-SMS users, grouping is done by means of a
volume table that is created by the StorageMate
product and maintained by you.
Even after volume pooling is implemented, both SMS
and non-SMS users can use this volume table to
simulate proposed changes before they are made.
Two different CA MICS files are combined to
produce this report; one provides space
information and the other provides performance
information. The HARDVA file can be filtered at
the hour or zone level so that the performance
information reflects a specific time period.
SMS
Issues: Prior to SMS implementation, this report can be
used to plan and simulate your SMS storage groups.
After implementation, the report is useful in
monitoring and tuning these same groups, and to
simulate proposed changes to the groups.
COLUMN DESCRIPTIONS
Volume Group Name
The volume group to which the information that
follows will apply. Volume group is determined
automatically for SMS users, as it is the same as
the SMS storage group. For non-SMS users, volumes
can be assigned to volume pools (at least for
reporting purposes) by specifying a Volume Group
Table name on the report options screen.
Number of Volumes
The number of volumes found within the input data
that were assigned to this volume group.
Frag. Index
The average volume fragmentation index for all the
volumes in this volume group. This is calculated
by dividing the sum of all volume fragmentation
index values by the number of volumes.
Total Data Sets
The total number of data sets residing in this
volume group.
Non-VSAM Data Sets
The number of Non-VSAM data sets residing in this
volume group.
VSAM Data Sets
The number of VSAM data sets residing in this
volume group.
Total Tracks Allocated
The total number of tracks allocated by all the
data sets in this volume group.
Non-VSAM Tracks Allocated
The number of tracks allocated by the Non-VSAM
data sets in this volume group.
VSAM Tracks Allocated
The number of tracks allocated by the VSAM data
sets in this volume group.
Free Tracks
The total number of unused volume tracks for all
volumes within this volume group.
Free Percent
The percentage of tracks within this volume group
that are available for the allocation of new data
sets.
Average I/O Rate
The total number of I/O requests per second being
received by the volumes within this volume group.
This value is the sum of the rates for the
individual volumes in the group.
Average Response Time
The average time a user of this volume group
waits, in thousandths of a second (milliseconds),
for an I/O request to complete. This is
recalculated at the volume group level, using the
same technique used to calculate this value for an
individual volume.
VOLUME GROUP CONFIGURATION (STGEHA) 5 CA MICS StorageMate - SUMMARY ABC CORPORATION ---------------------------------------------------- System Identifier=SYS7 ----------------------------------------------------- Volume Number Frag. +------ Data Sets ------+ +---- Tracks Allocated ----+ +---- Free ----+ +--- Average ---+ Group of Index Total Non- VSAM Total Non- VSAM Tracks Per- I/O Resp. Name Volumes VSAM VSAM cent Rate Time (NONE) 9 0.240 493 485 8 56962 56938 24 61392 52.0% 13.11 20.804 CICS-PRD 10 0.830 3427 3383 44 127095 125061 2034 5105 4.0% 4.84 25.681 CICS-TST 2 0.503 128 127 1 23464 23461 3 2964 11.0% 0.21 38.382 CORPORAT 11 0.700 3169 3137 32 136721 132680 4041 8460 6.0% 11.74 18.943 DB2-PRD 4 0.234 756 264 492 49822 22502 27320 3154 6.0% 0.36 18.838 DB2-TST 10 0.484 2399 2300 99 129838 116876 12962 2230 2.0% 6.33 23.556 FINANCE 6 0.547 2052 2018 34 78357 75641 2716 1107 1.0% 3.64 21.701 NETWORK 1 0.275 94 79 15 12424 2907 9517 820 6.0% 0.00 20.326 RESEARCH 5 0.475 1670 1658 12 64847 64582 265 1259 2.0% 10.49 22.204 SUPPORT 5 0.299 964 890 74 57384 37556 19828 8746 13.0% 3.39 19.913 SYSPROG 25 0.256 2020 1771 249 281364 211376 69988 49506 15.0% 17.59 26.182 -------- ------ ------ ------- ------- ------- -------- -------- -------- -------- ------ ------- -------- 88 0.441 17172 16112 1060 1018278 869580 148698 144743 12.0% 71.71 22.641
Figure 4-76. Volume Group Configuration / Totals
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