On Sat, 25 May 2013 22:23:17 -0400, Robert A. Rosenberg wrote: > >Way 2 is that your requested space is overridden by the computed >needed space and only that amount is allocated. That is then used to >accept the transfer. To do this the amount of space used for the >source is used to tell how much space to allocate for the target. >That takes into account the LRECL/BLKSIZE of both files as well as >the DEVTYPEs of the devices and the size of the source file. > All this is presuming that both source and target are legacy data sets. And even there, reblocking can introduce inaccuracies. Particularly significant if the source was allocated with BLKSIZE=32720 and originally written with BSAM using track balancing, for example.
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