The ARCGIVER Interface lets you talk to DFSMShsm. You can ask DFHSM to Back up, Migrate, Recall, or Recover your data sets, and execute DFHSM commands. This interface lets programs divorce data set allocation or catalog management from the recall of an archived or migrated data set. It also lets the program request asynchronous processing so that it can do other work while the request is being executed.
The use and coding of the ARCH macros are described in the IBM manual DFSMShsm Managing Your Own Data. The expansion of these macros includes a LINK to the ARCGIVER module. ARCGIVER builds an MWE (HSMese for Management work element) from the parameters passed to it and in turn passes that MWE to CA Disk. ARCGIVER issues an SVC 109 with the address of the MWE as a parameter. The storage management product then schedules the process requested. A limitation of this interface is that it does not provide support for data set name patterns. Only explicitly named data sets can be processed.
DB2 also uses ARCGIVER, asynchronously restoring data spaces that have been migrated while continuing to process SQL requests from other sources.
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