BDAM data sets of this format are not preformatted with fixed-length records, and can contain either completely empty or partially empty tracks embedded within. They use either TTR or absolute CCHH addressing techniques, and can be migrated between devices of the same type. Attempts to migrate between unlike devices can result in diagnostic messages and the data set being bypassed, or the migration can be successful, depending on the device types and the data involved.
The empty or partially empty status of the contained tracks is maintained. For more information, see the section Direct Access and Physical Sequential Data Sets in the chapter "General Information."
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