We are in the process of migrating a smallish system from one location to another. The plan is to dump all the dasd to tape at the original location, ship the tapes to the new location, and restore the tapes to new dasd.
The hardware at the new location is similar but not identical to the hardware at the old location. Therefore we are creating a new IODF and IOCP deck on a different system to use at the new location. I am thinking we are going to have a problem with the esoterics. The system does not use tokens for their esoterics. So I am thinking that we have to define the esoterics in the same order they were defined at the original location. But how do we find that out? The HCD report that was sent to us lists the esoterics in alphabetical order. To refresh my memory, I think this is how esoterics work. If tokens are not used then the order that the esoterics are defined is important. The catalog for a dataset cataloged with an esoteric unit type gets the sequence number of the particular esoteric in the list of esoterics. If tokens are used, then the token for an esoteric is a unique number that is stuffed into the catalog instead. The advantage using tokens is that you can delete an esoteric and not have the values of other esoterics possibly change? Is that right? What happens if you delete an esoteric with a token and that token is set in a catalog entry somewhere? Also, isn't there some kind of conversion job to convert catalog entries from sequence numbers to token numbers? Or was it a report job that listed catalog entries that were cataloged using esoterics? It's been so long ago that I last dealt with this stuff. But I don't want the system at the new location trying to mount tapes on dasd devices ... and vice versa!! Finally, a last question. If we substantially use the same device numbers, can we bring up the new system using the old system's IODF? The new system's IOCDS will be built with the new IOCP deck, so there may be mismatches on some chpids and control unit types between the IODF and the IOCDS. How much does MVS care what is correct in the IODF? After the initial IPL we can of course correct the IODF and get everything into sync. Thanks, Greg ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
