When SECOS is used, GUARDS is available as a mechanism for restricting access to files, libraries and library elements and job variables. Handling of file attributes is described in the section “File attribute handling” in the “ARCHIVE” manual [2]. The manual contains also information on the guard file and GUARDS. HSMS supports GUARDS in exactly the same way as the software product ARCHIVE.
In order to understand this section you must be aware that the statement sequence BACKUP-FILES/RESTORE-FILES is based on the ARCHIVE statements SAVE/ RESTORE, while the ARCHIVE-/RESTORE-FILES and EXPORT-/IMPORT-FILES statement sequences are based on ARCHIVE statements EXPORT/IMPORT.
This section has no relevance for migrated files, since such files are characterized by the fact that their catalog entry remains on the processing level and changes can be made during the period of migration. During recall, only the entries relating to the volume containing the file and the internal file name (CFID) are changed.