Hi list, Just looking for ideas/options here.
First the environment. z/OS 2.4 migrating to 3.1. CA-1 tape management. IBM TS7760 at primary site replicated to a second TS7760T. 2 LPARs in question here, one production and developer teat, the second a sandbox. We ran into a couple snags with some ancient assembler application programs that were "working" under multiple releases of OS/390 and z/OS. 2 of these modules were last assembled in 199x for context. Tried to run them in test of 3.1 and got S0Cx abends. Not blaming IBM because these abends are caused by bugs in the code. They were reading low memory and using what they found as pointers to other storage or loop counters. Between 2.4 and 2.5, IBM cleared out a bunch of these old storage locations because they aren't being used any more, causing our buggy programs to fail. We now need to do a more thorough test of these old programs to make sure we find them all. What I'm looking for ideas on is this: Some (not much) of our data is on tape. We have tape drives available to bring online to the sandbox but historically we have not allowed tape usage over there. To build the sandbox we use flashcopy to create a complete clone of the production LPAR, make the necessary parmlib etc changes, then IPL the sandbox without any tape. Do I have any options for being able to use a limited amount of tape on the sandbox in read-only mode in order to not have to copy production LPAR tape data to DASD then copy the DASD data to the sandbox? On old physical tape it was easy, pull the ring or flip the read-only switch on the physical tapes, and don't allow any physical loads of scratch tapes. Is there a way to make my virtual tapes read-only in the sandbox while still allowing them to be read/write to production? TIA, Rex ---------------------------------------------------------------------- The information contained in this message is confidential, protected from disclosure and may be legally privileged. If the reader of this message is not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, distribution, copying, or any action taken or action omitted in reliance on it, is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
