Do you mean to say that you go to DR without your HSM environment? That's what Duplexing is for, besides protecting against the odd bad tape.
Dave O'Brien NIH Contractor ________________________________________ From: IBM Mainframe Discussion List [[email protected]] On Behalf Of Paul Gilmartin [[email protected]] Sent: Tuesday, May 12, 2009 11:56 AM To: [email protected] Subject: Re: ADRDSSU protection [was:RE: Using FTP to send loadlib] On Tue, 12 May 2009 17:31:43 +0200, 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. > What, then, should one use to create a complete copy of one's data such as might be needed for disaster recovery? I could imagine a hirearchy of Requirements for dealing with this: o An option to set nonzero return code when a data set is so skipped. o An option to force recall of migrated data sets when needed. o A similar option with an enhancement; a side door to HSM so data could be moved directly from ML[12] to the backup medium, avoiding the double I/O otherwise necessary. But that's the edge of a slippery slope; others could imagine the need for infrequent access to specific migrated data for which the overhead of recall and re-migrate appears onerous. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
