A number of HSMS statements result in I/O operations on user files and save files and these are executed in an HSMS subtask (not in the calling task) and require some action on the part of the software product ARCHIVE. These HSMS statements are referred to as action statements:
ARCHIVE-FILES (ARF) | Archive files |
ARCHIVE-NODE-FILES (ANF) | Archive node files |
BACKUP-FILES (BCF) | Save files and job variables |
BACKUP-FILE-VERSIONS (BFV) | Save files |
BACKUP-NODE-FILES (BNF) | Save node files |
COPY-EXPORT-SAVE-FILE (CES) | Copy save file |
COPY-NODE-SAVE-FILE (CNF) | Copy node save files |
COPY-SAVE-FILE (CSF) | Copying save files |
EXPORT-FILES (EXF) | Export files and job variables |
IMPORT-FILES (IMF) | Import files and job variables |
MIGRATE-FILES (MGF) | Migrate files |
MOVE-SAVE-FILES (MSF) | Move save file |
RECALL-MIGRATED-FILES (RMF) | Retrieve files |
| REORGANIZE-VERSION-BACKUP (RVB) | Reorganization of version backup archives |
REPAIR-CATALOG-BY-RESTORE (RCR) | Repair inconsistencies in migrated files using RESTORE |
REPLACE-SAVE-FILE-BY-RESTORE (RFR) | Replace save file in migration archive using RESTORE |
RESTORE-FILES (RSF) | Restore files and job variables |
RESTORE-LIBRARY-ELEMENTS (RLE) | Restore elements of a library file |
RESTORE-NODE-FILES (RNF) | Restore node files |
UPDATE-EXPORT-SAVE-FILE (UES) | Update backup |
Each action statement includes an OPERATION-CONTROL operand which serves to control the processing of the requests.
HSMS generates a request for each I/O operation initiated by any of these action statements. The requests are processed by user tasks specifically designed for this purpose, the HSMS server tasks. With the exception of the data transfer function, the HSMS server tasks are given the job name “HSMSSERV” and run under the TSOS user ID; they are present throughout the HSMS session.
These HSMS server tasks call ARCHIVE, which in turn creates ARCHIVE subtasks for processing the inputs/outputs. The ARCHIVE subtasks are given the job name in accordance with the specification in the REQUEST-NAME operand (see section "Operation control").