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Data Set Organizations

The data set organizations supported by MSS are shown in the following table.

Abbreviation Organization Comment
GDG Generation data group  
IS Indexed sequential  
ISU Indexed sequential, unmoveable  
PDSM Partitioned data set member Micro Focus organization
PO Partitioned  
POU Partitioned, unmoveable  
PS Physical sequential  
PSU Physical sequential, unmoveable  
VSAM Virtual storage access method  
Note: Although the direct access (DA) organization is not supported explicitly, you can emulate it by using the VSAM organization and relative record (RR) record format.
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