IEBCOPY
The IEBCOPY utility supplied by IBM uses EXCP processing.
DATA ACCELERATOR Compression does not compress or expand data read or written using EXCP processing.
When IEBCOPY is invoked, the Copy interface determines whether the data sets in the copy operation can be processed using EXCP. If EXCP processing is appropriate, the interface passes control to IEBCOPY for the particular copy operation. If EXCP processing is not appropriate, the Copy interface performs the copy operation.
When a copy operation involves a mixture of compressed and noncompressed data sets, the Copy interface performs the copy request. When a copy operation involves noncompressed data sets or when the copy operation is an UNLOAD or LOAD, IEBCOPY performs the request.
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