By my calculation (verified by experimentation) a blocksize of 7000 gets
7 blocks per track for 49000 bytes/track.
Oops, ur right. I read the 3390 blocksize chart wrong. So for
LRECL=7000, BLKSIZE=7000 gets MORE data on the track than 21000
(half-track).
BTW, the largest half-track record on 3390 is 27,998, just 2 bytes short
of 28000 (7000*4). Which is why LRECL=6999 gets a blocksize of 27996.
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal: [EMAIL PROTECTED]
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