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Calculating DASD Space Used z/OS DFSMS Using Data Sets SC23-6855-00 |
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When a large format data set is allocated, the DS1Large bit (X'08') is set in the DSFLAG1 field of the DSCB. Programs that calculate DASD space usage can check this flag bit, and allow for the possibility that any extent except a user label extent might exceed 65␠535 tracks. |
Copyright IBM Corporation 1990, 2014
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