2. SAMPLE PLANNING APPLICATIONS › 2.8 SMS Resource Planning › 2.8.3 Standard Output
2.8.3 Standard Output
The capacity planning database file generated by the SMS
Planning Sample Application contains the following data
elements:
A. Data elements common to all CA MICS Capacity Planner
database files:
SYSID
ZONE (Always equal to "A") - see Note)
YEAR
MONTH or WEEK or MNTHDAY
DATE
Note: The VCA Information Area database files do not use the
ZONE variable. The SMS Resource Planning Sample
Application automatically sets the ZONE variable to A.
Code an A where a ZONE value is required when using the
component's trending programs.
B. Data elements unique to the SMS Resource Planning Sample
Application database file:
1. Character format data elements
CAPAPU - SMS Storage Category
2. Numeric format data elements
DAAALLSP - Amount of Space Allocated (Mbytes)
(for each Storage Category)
DAAUSESP - Amount of Space Used (Mbytes)
(for each Storage Category)
MBALOC - Megabytes Allocated for system
MBTOTL - Megabytes Total for measured system
MBUSED - Megabytes Used for system
PCATRAL - Percent of Total Allocation for CAPAPU
(for each Storage Category)
PCATRUS - Percent of Total Usage for CAPAPU
(for each Storage Category)
PCTALOC - Percent Allocated for System
PCTUSED - Percent Used for System
STGVOLNO - Total Volumes for Storage Group
(Present only if CAPAPU=GROUP)
DERIVATION OF THE SMS PLANNING DATA FILE ELEMENTS
The following paragraphs discuss the DASD Planning database
file elements.
CAPAPU: The data element that contains the values found
either in STORNAME, STORSTGC, STORMGTC, or values
derived within the user's exit. In the capacity
planning database, there is a separate observation
for each value of CAPAPU for each MONTH, WEEK or
DAY. In addition to the groups defined, there will
be an observation for a CAPAPU value of "**OTHER**"
that represents all the storage space having blank
values for CAPAPU from STORNAME, STORSTGC, or
STORMGTC. It is recommended, but not required,
that, if the you write an exit, this exit provide a
catchall category like "**OTHER**".
STGVOLNO: This is obtained from VCAVOA, if CAPAPU is set to
storage group (STORNAME). Its creation is skipped
if any CAPAPU other than storage group is selected.
In the calculation of the numeric data elements, the elements
that are used from the CA MICS VCAVOA and VCADAA Files are
the following:
DAAALLSP - Amount of Space Allocated (Mbytes)
DAAUSESP - Amount of Space Used (Mbytes)
VOACAPMB - Total Capacity of Volume in Megabytes
The data elements DAAALLSP, DAAUSESP, MBALOC, MBUSED, and
MBTOTL all represent average usage statistics for the
timespan being considered (that is, MONTH). Over the span
of a month, actual use may vary considerably as SMS volumes
are installed or discontinued, and data sets are allocated,
extended, released, or scratched.
During the summarization process, VOAVOLNO is used to weigh
the individual observations from the VCAVOA File and DAASAMPL
is used to weigh the individual observations from the VCADAA
File. This allows the numeric data elements contained in the
capacity planning database file to be calculated correctly,
even if a volume resided on more than one device type during
a month, or a particular category of data sets was present
during only a part of a month.
The data elements from the VCAVOA and VCCDAA Files that are
used to compute the DASD Planning file elements are
themselves derived from the CA MICS VTOC Catalog Collector
(VCC) Component. This product performs a periodic scan on
all volumes that are defined to it. The elements defined
next represent averages over all scans taken during the
month.
DAAALLSP: The amount of space allocated for each CAPAPU. This
value is computed as the sum of DAAALLSP for each
unique value of CAPAPU.
DAAUSESP: The amount of space used for each CAPAPU. This
value is computed as the sum of DAAUSESP for each
unique value of CAPAPU.
MBALOC: The total allocated space in the measured system.
This value is computed as the sum of DAAALLSP for
the entire measured system.
MBUSED: The total used space in the measured system. This
value is computed as the sum of DAAUSESP for the
entire measured system. It represents productively
used space since this space always contains some
sort of data, either user or system defined.
Because used space must be allocated, MBALOC is
always greater than MBUSED. This space is allocated
for the growth of existing data sets and therefore
is not available for the addition of new data sets.
The difference between MBALOC and MBUSED is the
space that is allocated, but unused. A large
amount of unused space indicates that a
considerable amount of space has been reserved by
current users, but is not being used.
MBTOTL: The total space in the measured system. This value
is computed as the sum of VOACAPMB for each VOLSER
measured.
Note that the above data element definitions have all been
expressed in units of megabytes. For purposes of the SMS
Planning Sample Application, a megabyte is defined as
1,000,000 bytes. This is consistent with published
specifications for storage devices and with other SMS-related
calculations performed for files in the VCA information area.
Percentage values have these definitions and derivations:
PCTUSED: Percent used for measured System. The percent of
total space for the measured system which is used.
PCTUSED = 100 * (MBUSED / MBTOTL)
PCTALOC: Percent allocated for measured system. The percent
of total space for the measured system which is
allocated.
PCTALOC = 100 * (MBALOC / MBTOTL)
PCATRAL: Percent of total allocation for CAPAPU. The
percent of total allocated space for the measured
system which is allocated for a particular CAPAPU
category.
PCATRAL = 100 * (DAAALLSP / MBALOC)
PCATRUS: Percent of total usage for CAPAPU. The percent of
total used space for the measured system which is
used for a particular CAPAPU category.
PCATRUS = 100 * (DAAALLSP / MBUSED)
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