4. FILES › 5.2 VTS Component Files › 5.2.2 VTS Component IVT Information Area Files

5.2.2 VTS Component IVT Information Area Files

This section identifies each file in the IBM Virtual Tape
Subsystem (IVT) information Area and defines its levels of
summarization and data sequencing.  The active data elements
for each file are also listed.

IMPORTANT NOTES:

o The SMF type 94 records used to create all IVT information
  area files are produced at hourly intervals.  This is the
  timespan granularity associated with the MICS DAYS
  timespan.  The IVT information area files are all turned
  off by default in the DETAIL timespan.  If DETAIL is
  activated for any IVT information area files, the file
  content is identical to that in the DAYS timespan.

o The SMF type 94 records used to create all IVT information
  area files contain information collected from the VTS
  perspective.  The z/OS system collecting SMF type 94
  records is irrelevant, and if collected from multiple
  systems, is redundant.  The VTS component filters all SMF
  type 94 data to select a representative hour for each VTS,
  and stores a user specified SYSID value in the IVT
  information area files.  The SYSID value used is specified
  with the VTSSYSID statement in prefix.MICS.PARMS(VTSOPS).
  If not specified, a default value of 'SYS1' is assigned to
  the SYSID data element.  See section 7.2.3.1.3 for more
  information.


The files maintained in the IVT information area include:

    1 - VTS Distributed Library Activity File (IVTVDL)
    2 - VTS Composite Library Activity File (IVTVCL)
    3 - VTS VTC Controller Detail File (IVTVTC)
    4 - VTS Preference Mgmt Cache Usage File (IVTVCU)
    5 - VTS Physical Drive Activity File (IVTPTU)
    6 - VTS Volume Pool Statistics File (IVTVPS)
    7 - VTS Tape Library Config and Activity File (IVTTCA)
    8 - VTS Import/Export Statistics File (IVTIEX)