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Fragmentation z/OS DFSMS Using Data Sets SC23-6855-00 |
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Most allocation units are approximately the same size. This is because of the way members are buffered and written in groups of multiple pages. There is very little, if any, fragmentation in a PDSE. If there is fragmentation, copy the data set with IEBCOPY or DFSMSdss. The fragmented members are recombined in the new copy. |
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