Clearly the biggest issue is the geometry change from 47K to 56K; so you
can’t use any “physical” type utilities (E.g. Full Dump & Restore) to
perform the data move unless you configure the 3390 devices in 3380
emulation mode.
Ya know, that is not completely true. As long as the output track will
hold all the records on the input track, most access methods will
support a track-by-track copy. VSAM usually will not, but does in some
circumstances.
PO datasets are an issue because one of the quirky differences between
3380 and 3390 is that the 3380 holds 1 more PDS directory block on a
track than the 3390. So if the 3380 PDS has more than 1 track of
directory (47 blocks I believe), then the track copy will fail
--
Bruce Black
Senior Software Developer
Innovation Data Processing
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