W dniu 2012-02-13 14:28, Thomas Berg pisze:
[...]
With SPACE=ANY, the needed space is allocated and extended during the execution.
So You don't do any "preallocation" of a specified amount of space.
Thomas,
Your idea is worth discussion, but not your requirement is off target.
It is not JCL problem, it is z/OS problem. To fill the requirement the
sapce should be allocated ad hoc, cluster after cluster (*). That
requires total VTOC revolution.
BTW: Idea of space extents is maybe archaic, but I wouldn't consider it
worse. It's different and reruires different approach and tools.
(*) Cluster - in this case the smallest addressable amount of disk
storage. For 3390-3 it would be 1 trk, for NTFS disk in my PC it would
be 4kB, for old FAT format of 2GB partition it was 32kB, for EAS on EAV
device it is 21 CYL.
--
Radoslaw Skorupka
Lodz, Poland
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