On Tue, 28 May 2013 17:34:17 +0000, Pommier, Rex R. wrote:

>That's just where I was going in my thinking.  It looks like something is 
>defined as a 3380.  3380 track is 83% of capacity of 3390, and his initial 
>allocation of 654 tracks is suspiciously close to 83% of his other 2 
>allocations of 780 tracks.
> 
And this is why IBM (I believe) among coloro che sanno, recommends
allocating in bytes rather than geometry-sensitive units such as tracks
or cylinders.  Good advice to follow, IMO.

--  gil

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