This section clarifies the concepts and values associated with specific
attributes.
- Percent used and free
-
- Percent Used and Free for PDS, PDSE, and HFS data sets is calculated based
on the allocated and used tracks from the VTOC, and does not take into account
internal usage or wastage within the data set.
- Tracks Used is set equal to Tracks Allocated for PDSE and HFS data sets.
- For VSAM data sets Percent Used and Free is based on the volume-level
High Used and High Allocated RBAs (relative byte addresses).
- Space values
- The following details govern the collection and display of space values
in the product:
- Catalog Values
- The following details pertain to catalog values in the product:
- The VTOC Index (SYS1.VTOCIX.Vnnnnnn) and VVDS
(SYS1.VVDS.nnnnnn) are not included in the Uncataloged
Summary.
- Because the Dataset Attribute database is built starting at the Volume
level, there might be entries in a Catalog that are not represented in the
Catalog Detail display. The entries that are not displayed can include the
following:
- Data sets that are in the catalog but do not physically exist on any volume
- Tape data sets
- VSAM Clusters that do not physically exist on disk
- Datasets that are cataloged in more than one catalog