On Wed, 14 Sep 2022 18:32:48 +0000, Michael Watkins wrote: >IBM says: 'Before z/OS V1R7, the HFS file system was the primary hierarchical >file system. As of z/OS V1R7, you can use any combination of HFS and zFS file >systems. Because zFS has higher performance characteristics than HFS and is >the strategic file system, you should migrate your HFS file systems to zFS.' > >See: 'z/OS DFSMS Using Data Sets', Version 2, Release 5, p.451 > Is DSNTYPE ever needed, or even useful when allocating an existing data set? Is DISP=OLD,DSNTYPE=?? allowed to differ from the DSNTYPE at creation of the data set, even as an overriding DSORG can be useful?
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