On Wed, 14 Sep 2022 16:25:43 -0500, Matthew Stitt wrote:

>If you specify HFS as a filesystem in BPXPRMxx on z/OS V2R5 it will get 
>rejected.  The system will come up, but the mounting of HFS file systems will 
>fail.
>
>You can also specify ZFS as a parameter in IDCAMS when defining a VSAM 
>dataset.  This replaces the Dataset type of LINEAR and obviates the need for a 
>separate format step.  The format will take place when the file system is 
>mounted the first time.
> 
Is this, then, something that TSO tolerates for compatibility but essentially 
ignores?
Even if so, the Ref. etc. should make that clear.

I have never specified DSNTYPE and PATH on the same allocation.  Long ago, and
infrequently I created DSNTYPE HFS with ISPF 3.2.

-- 
gil

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