On Thu, 13 Mar 2008 10:59:37 -0400, Scott Rowe wrote:

>I think you are a bit confused, HDELETE does not have a NONVSAM option, IDCAMS 
>does.  At the time of a delete, IDCAMS cannot assume that HSM is the migrator, 
>it could just as easily be FDRABR or some other product.
>
Thank you for improving my understanding.

But still ...

It appears that the consensus of this thread is that in the absence
of the NONVSAM option, IDCAMS converts a DELETE request for a migrated
data set to HDELETE.  If IDCAMS doesn't know whether the migrator is
HSM, FDRABR, or some other product, how does it know what component
to issue the converted DELETE to?

If the interfaces are compatible and, as I still believe, the migrator
must know the VSAM-ness in order to perform the deletion without recall,
it could as well return that characteristic in response to an HLIST or
equivalent API query.  There's considerable value in avoiding recall
of an entire data set in order to obtain one bit of information.

-- gil

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