>tyvm, really sweet. > >So we can "have our cake and eat it too". > >If I understand what you are saying. > >The real volser is on cylinder 0. >But since we define minidisks from cylinder 1 to whatever, the minidisk,
>virtual disk, volser is defined on cylinder 1. > >Since DDR never really cares about or writes the last cylinder, though i t >complains, we can DDR to the minidisk, virtual disk, just as we would a >to real disk and all is copacetic, at least as long as IBM does not mess >with this. (Hope Alan is not listening). DDR does care and will try to copy the last cylinder, hence the error message it will produce. It's that *we* don't care because we leave empt y the cylinder that won't be copied. Which brings up the previously unmentioned point that for your PAGE and SPOOL packs you should *not* allocate that last cylinder as PAGE or SPOL. In practice it will rarely make a difference unless your 2nd level system runs short on PAGE or SPOO L space - at which point it will abend when it tries to write to the cylinder it thinks is available but is beyond the end of the minidisk. Brian Nielsen
