4. FILES › 5.2 VTS Component Files › 5.2.3 VTS Component SVT Information Area Files › 5.2.3.1 StorageTek VTSS Summary File (SVTSVS) › 5.2.3.1.3 SVTSVS Usage Considerations

5.2.3.1.3 SVTSVS Usage Considerations

This section identifies any special considerations or
techniques related to using the SVTSVS file.

The SVTSVS file is generated from a mix of files representing
both interval level statistics and event data.  For data
elements associated with events, missing values will result
if no events occurred during the interval.

If the values for particular metrics are always missing, it
may be that the source SMF record subtypes are not being
recorded.  Consult with the VSM Storage Administrator and
review the SMF parameters for VTCS in SYS1.PARMLIB to verify
which records are recorded.

In addition, data element SVSMASK, in the DETAIL timespan
indicates the SVTfff records that contributed to the
observation.  Each byte of SVSMASK represents whether or not
a particular SVTfff file contributed to the SVS file
observation.  See the data dictionary description for SVSMASK
for the mapping of SVTfff file pertains to each SVSMASK byte.