On Fri, 17 Feb 2012 10:39:03 -0600, Mark Zelden wrote: > >Although it is a crude and inaccurate conversion, one could use M instead of >CYL basically >1:1 and would be sure to get enough space since 1M is about 1.42 CYLs. If I >did that at >least I could picture it in my head the same way I have been doing with with >CYL for >my entire MF career. On a slightly larger scale, so what if I allocated in M >and ended up with >710 CYL instead of 500 CYL. (typical for me to use (500,500) for "large-ish" >allocations). > It would seem to me that when the time came to convert from 3330 to 3350 (e.g.), the simple path would have been to replace "TRK" with "13030" (CYL slightly more complicated) and leave the other numbers unchanged. JCL so modified would work on either model during the transition, and be suitable for any future DASD.
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