Thanks for the suggestions so far and the confirmation that the TMC's don't
need any change.   I think I know most of the traditional device migration
approaches and techniques.  I work with a tape hardware vendor and have been
involved in tape management software for lots of years.  I did not describe
any specific hardware configurations because I am looking for something that
can be adapted to many different migrations and different situations.  I am
dealing with virtual tape devices/appliances which can offer some unique
challenges with different connectivity configurations.  Migration solutions
that do not require the recreation of data sets are much easier to do.
That's why I am looking for ways to modify the actual hex device codes in
the catalog.

Specifically, I am looking for suggestions on what is available for mass
catalog updates.  I'd rather not reinvent the wheel if there are useable
tools around.

Chuck Arney
Arney Computer Systems     

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Linda
Sent: Monday, June 25, 2012 1:28 PM
To: [email protected]
Subject: Re: Catalog Device Type Conversion

Hi Chuck,

We use esoterics. Our standard allocation is TAPE, defined in the IODF
eligible device table. A few years ago, when we moved from physical tape to
virtual tape, I added the new virtual tape to TAPE. The old tape was
Quiesced (SMS). Most of our tape is short term retention, so having all the
new go the virtual and read the physical tapes from the old worked welln We
used CopyCat (we use CA1) to move the longer retention tapes. Using the
esoterics also meant that we didn't have any JCL changes. 

If you change the device type in the catalog and the tapes are not migrated
to the new device, you may well have trouble mounting the old tape. 

If you can close the catalog and export it you could run idcams, iebupdte or
rexx or another program to make the catalog changes and rebuild the catalog.
It was our experience that adding the new virtual tape to the TAPE esoteric
in the edt, and letting SMS take care of most of the rest. 

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