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Source: VCAVOA file at the DETAIL timespan
Function: This facility allows the storage administrator to
monitor key storage indicators on a day-by-day
basis. These indicators enable the user to
project short-term storage needs, both at the
hardware unit level (volume, volume group, or
device type) and the system level. The indicators
reported by this facility are also useful for
detecting problems with storage resources that are
not being used efficiently. These reports, along
with the Monthly DASD Resource Usage reports,
provide both a short view and a long view of
storage capacity and performance problems,
measured at the hardware level.
The Daily/Monthly DASD Resource Usage reports
complement the Daily/Monthly Application Resource
Usage reports to give a complete picture of
storage usage and capacity. While the application
reports tend to measure storage capacity and
consumption at the application level, the DASD
reports take a more hardware-oriented look at
similar data. These reports are useful for tasks
such as planning for new DASD, or balancing
volumes between volume groups or SMS storage
groups. Both sets of reports allow you to measure
and control growth at the application and the
hardware levels.
The types of data that can be selected for
reporting include the number of data sets, the
amount of space being allocated, percentages of
data sets and space in certain categories, the
amount of allocated versus used space, and other
measures of performance and capacity.
Features: Summarization options allow you to analyze the
data based on volume serial number, device type,
volume group or SMS storage group, or to provide
totals for each system.
Data filtering allows you to include data from
selected groups. For example, you can choose to
report on specific volumes, device types, or SMS
storage groups.
Output reports from this facility include tabular
reports, printer plots, or color graphic plots.
When plots are requested, up to nine different
elements can be plotted on the same chart.
Many users choose to run the CA MICS DASD
Collector multiple times during the day and then
combine those multiple measurements into the same
cycle of CA MICS data. The reports in this
facility will detect this condition and alter
their output to reflect this "detail mode" of
operation. The values on each report and graph
will then reflect individual measurements for each
day rather than just one value per day. Detail
mode will be activated when 3 or more unique
measurements are found for the same volume on any
one day. It is suggested you do not combine
detailed and normal data cycles in the same report
execution.
SMS
Issues: The ability to summarize by SMS storage groups
makes it easy to monitor the short-term activity
within each of your defined groups. Many of the
elements you can select for reporting are useful
for monitoring an SMS migration effort, or to make
sure SMS is operating correctly after migration is
complete. Using a Volume Group Table, alternate
storage group configurations may be designed and
simulated before being implemented.
COLUMN DESCRIPTIONS
TITLE 4
The fourth report title line on each tabular
report page indicates the indicator or element
that is being reported on that page. Note the
values displayed for each item will depend on the
input sources specified for the report. Any or
all of the following values may appear:
Data Set Count: Total
Represents the total number of data sets found
the input data for this particular summary
group.
Data Set Count: SMS-Managed
Represents the number of data sets found in the
input data for this particular summary group
that are managed by SMS.
Data Set Count: Unmanaged
Represents the number of data sets found in
the input data for this particular summary
group that are not managed by SMS.
Data Set Count: Non-VSAM
Represents the number of data sets found in
the input data for this particular summary
group that are not VSAM data sets.
Data Set Count: VSAM
Represents the number of data sets found in
the input data for this particular summary
group that are VSAM data sets.
Space Allocated (MB): Total
Represents the total space allocated, in
megabytes, by all the data sets found in the
input data for this particular summary group.
Space Allocated (MB): Managed
Represents the total space allocated, in
megabytes, by all the data sets found in the
input data for this particular summary group
that are managed by SMS.
Space Allocated (MB): Unmanaged
Represents the total space allocated, in
megabytes, by all the data sets found in the
input data for this particular summary group
that are not managed by SMS.
Space Allocated (MB): Non-VSAM
Represents the total space allocated, in
megabytes, by all the data sets found in the
input data for this particular summary group
that are not VSAM data sets.
Space Allocated (MB): VSAM
Represents the total space allocated, in
megabytes, by all the data sets found in the
input data for this particular summary group
that are VSAM data sets.
Percentage of Data Sets: Managed
Represents the percentage of all the data sets
found in the input data for this particular
summary group that are managed by SMS.
Percentage of Data Sets: Unmanaged
Represents the percentage of all the data sets
found in the input data for this particular
summary group that are not managed by SMS.
Percentage of Data Sets: Non-VSAM
Represents the percentage of all the data sets
found in the input data for this particular
summary group that are not VSAM.
Percentage of Data Sets: VSAM
Represents the percentage of all the data sets
found in the input data for this particular
summary group that are VSAM.
Percentage of Space: Managed
Based on the total space allocated by all the
data sets in this summary group, the
percentage of that space belonging to data
sets that are managed by SMS.
Percentage of Space: Unmanaged
Based on the total space allocated by all the
data sets in this summary group, the
percentage of that space belonging to data
sets that are not managed by SMS.
Percentage of Space: Non-VSAM
Based on the total space allocated by all
the data sets in this summary group, the
percentage of that space belonging to data
sets that are not VSAM data sets.
Percentage of Space: VSAM
Based on the total space allocated by all the
data sets in this summary group, the
percentage of that space belonging to data
sets that are VSAM data sets.
Percentage of Space Used: All Data
Represents the percentage of space allocated
versus used for all the data sets found in the
input data for this particular summary group.
This is calculated by dividing the total
tracks used by the data sets in this group by
the total tracks allocated. Note that HSM
data sets are not included in this
calculation.
Percentage of Space Used: Non-VSAM
Represents the percentage of space allocated
versus used for the non-VSAM data sets found
in the input data for this particular summary
group. This is calculated by dividing the
total tracks used by the non-VSAM data sets in
this group by the total tracks allocated by
the non-VSAM data sets. Note that HSM data
sets are not included in this calculation.
Represents the percentage of space allocated
versus used for the VSAM data sets found in
the input data for this particular summary
group. This is calculated by dividing the
total tracks used by the VSAM data sets in
this group by the total tracks allocated by
the VSAM data sets. Note that DFHSM data sets
are not included in this calculation, because
they are always fully used.
Total Storage Capacity (MB)
Represents the total published storage
capacity for all the volumes in this
particular summary group, expressed in
megabytes.
Total Capacity Allocated (MB)
Represents the total amount of space within
this particular summary group that has been
allocated, and is no longer available for
allocation by other data sets. This value is
expressed in megabytes, and represents the
space allocated by data sets and system areas
such as VTOCs.
Total Capacity Free (MB)
Represents the total amount of space within
this particular summary group that is
available for allocation by other data sets.
This value is expressed in megabytes.
Percentage of Capacity Allocated
Represents the percentage of space within this
particular summary group that has been
allocated, and is no longer available for
allocation by other data sets. This value
represents the space allocated by data sets
and system areas such as VTOCs.
Percentage of Capacity Free
Represents the percentage of space within this
particular summary group that is available for
allocation by other data sets.
Average Fragmentation Index
Represents the average of all the
fragmentation indexes for all the volumes in
this summary group. The fragmentation index
is used as a measurement of space
fragmentation on each volume, with a low
number indicating little fragmentation, and
higher numbers indicating greater amounts of
fragmentation.
Free VTOC Index Records
Represents the total number of free VTOC index
records for all of the volumes in this
particular summary group. For volumes with
indexed VTOCs, this number indicates the
amount of index expansion space available.
SYSID
Unless summarization by SYSID is chosen, this
value appears at the top of each page and
identifies the System Identifier (system) to which
this data applies.
Date
When detailed reporting is active, the date will
appear at the top of each page in the format
'ddmmmyy'. All data on the remainder of the page
will apply to this date.
SYSID
Volume
Volume Group
Device Type
The left-most data column on each report line
indicates the summary group to which the values on
that line apply. Depending on the report option
chosen, this summarization will be done by volume,
volume group (SMS storage group), device type, or
system (SYSID). The label at the top of the
column will be one of the values shown above,
depending on the summarization option chosen.
Value ddmmmyy
Indicates the value for this particular element
for this particular summary group during the date
indicated in the column heading. The date is
represented in the format 'ddmmmyy'.
Value hh:mm:ss
When detailed reporting is active, this indicates
the value for this particular element for this
particular summary group at the measurement time
indicated in the column heading. The time is
represented in the format 'hh:mm:ss'.
Compound Growth Rate (%)
Reports the compound growth rate (CGR) calculated
for this group using the values from the
days/times shown on this report. A value of 5.00,
for example, indicates a growth rate of
approximately 5% per day/interval for this group,
based on the values included in the report.
DAILY DASD RESOURCE USAGE (STGEJE) CA MICS StorageMate ABC CORPORATION Space Allocated (MB): Total ----------------------------------------------------------- SYSID=S008 ------------------------------------------------------------ Volume | Value Value Value Value Value | Compound Group | 01JAN92 02JAN92 03JAN92 04JAN92 05JAN92 | Growth | | Rate (%) LARGE | 20878 21654 23508 . 22893 | 2.33 TECHSUP | 11349 11435 11416 . 11491 | 0.31 TEMP | 304 408 214 . 2111 | 62.29 TSO | 31911 31765 32908 . 33262 | 1.04 -------- --------- --------- --------- --------- --------- SYSID 64442 65261 68047 0 69757 ========= ========= ========= ========= ========= 64442 65261 68047 0 69757
Figure 4-23. Daily DASD Resource Usage / Summary
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