O'Brien, David W. [C] , NIH/CIT wrote:
Why not use HSM ABAR Backups which include migrated datasets?
Try figuring out how to recall a single dataset from an ABARS backup and
it becomes clear ABARS is really designed with recovery in mind, not
with providing easy access to archives of specific datasets.
JC Ewing
Dave O'Brien
NIH Contractor
________________________________________
From: IBM Mainframe Discussion List [ibm-m...@bama.ua.edu] On Behalf Of Mark
Jacobs [mark.jac...@custserv.com]
Sent: Tuesday, May 12, 2009 11:37 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: ADRDSSU protection [was:RE: Using FTP to send loadlib]
R.S. wrote:
Roach, Dennis (N-GHG) pisze:
As a sysprog, I agree.
For the applprog, verify what happens when a data set is on ML1 or ML2
and a masked include is used. DSS used to skip these and still have a
zero return code. This caused the application source to be left off of
their DR tapes.
This is well-know and documented behavior. We shouldn't assume, that
applprog is less intelligent than sysprog.
And this "gotcha" is no justification to for denying ADRDSSU at all.
Applprogs (everyone) can make mistake without ADRDSSU as well.
Applprogs are probably allowed to use many tools which they don't
know well.
Jobstep 1 - HRECALL with wait option
Jobstep 2 - DFDSS processing.
It's not rocket science.
A simpler and more fool-proof method:
Instead of a separate step, hang an unreferenced DD statement on the
actual DFDSS step for all datasets that "must" be dumped and which have
any possibility of being migrated. Step allocation will cause all
DD-referenced datasets to be recalled before step execution proceeds,
and there is no possibility of migration occurring before the dump
(which could happen if a separate recall step occurs just before DFHSM
interval migration, since the dataset is not opened to reset the
last-referenced date). If a dataset is migrated because it has not been
referenced as recently as the others in the backup step, it might also
make sense to question if it is appropriate for that dataset to be in
the same backup collection.
JC Ewing
--
Mark Jacobs
Time Customer Service
Tampa, FL
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