On Thu, 18 May 2023 11:37:18 -0500, Kirk Wolf wrote:
>
>To answer your other question (preserving SDW):  if you copy a RECFM=VBS 
>dataset using DCB=RECFM=U, you will get BDWs and SDWs.
> 
Yes.  I did that with REXX in an era when REXX supported nether
VBS nor U.  I first used a utility (REPRO, IIRC) to copy (overriden)
RECFM=U to RECFM=V, adding generated BDW/RDW in a
temp file, then using EXECIO.  REXX is better nowadays.  But
LRECL=X?

Yes.  But PDSE prohibits such overrides.  Why!?  (I suspect some
limitation of NOTE/POINT.)

Beware FTP!  I've fount it undoes allocation overrides rather than
using QSAM with allocated attributes.

What's recommended for continuous stream data, as for lab
instruments?

o RECFM=U?

o RECFM=VBS,LRECL=X?

o zFS?

o Other (specify)?

-- 
gil

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