--------------------------<snip>--------------------------
Is there some way to run a test of this and see if there is any
performance improvement? I'm asking because the DASD is
simulated/emulated behind cache. And isn't this why certain VSAM options
are no longer required/supported?
So if there is a certain amount of intelligent read-ahead into cache,
would defragging actually accomplish anything more than correcting VTOC
entries?
-----------------------<unsnip>-----------------------------
Yes. DEFRAG, among other things, will consolidate free space, making
allocation more efficient.
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