>HSC/SMC get involved at allocation so they are out of the picture at >that point. All HSC knows is a tape was mounted so it marks it >non-scratch in the CDS to preserve integrity. HSC would probably need >to add hooks into the system like other tape management software does >to do more.
I know SMC influences allocation, however HSC is involved at other points. When installing you're told to make sure that the HSC subsystem follows TMS in the IEFSSNxx definitions - that's so that HSC sees messages _after_ CA-1 has dealt with them. I believe this is HSC's "hook" into what's happening with the tapes. Two people have mentioned that they think a tape is marked "non scratch" at the time it is mounted - is there anyone from StorageTek on this list that can verify that the tape is marked "not scratch" at mount time, as opposed to OPEN, CLOSE, EOV or the IECTMS3 occurrence? To me it would make sense to do the "not scratch" change at OPEN time if the DCB is opened for any kind of output function- however as Mr. Zelden says, that would involve hooks in the same place as tape management software like CA-1. Tim Hare Senior Systems Programmer Florida Department of Transportation (850) 414-4209 ---------------------------------------------------------------------- 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
