Retention of ARCHIVE directory files
Since HSMS is often introduced in environments which used to use the software product ARCHIVE, the directory files created by ARCHIVE can be retained under HSMS. For this purpose, the directory file has to permit catalog IDs, i.e. must have been created by means of the ARCHIVE statement PARAM CATID=*YES. The DIRCONV routine, which is supplied together with ARCHIVE, serves to convert a directory file without catalog ID not created with CATID=*YES to one that permits catalog IDs.
HSMS can continue to use the existing volume pool and save files created using ARCHIVE. This is implemented by creating an HSMS archive: The old ARCHIVE directory file can be assigned to this HSMS archive as the archive directory. This is done using:
//CREATE-ARCHIVE ARCHIVE-NAME=<archive name>, - // DIRECTORY-NAME=<file name>(NEW-DIRECTORY=*NO)
The complete scope of HSMS functions is then available to this archive.
ARCHIVE directory files should be transferred to backup archives only, since this is subject to the fewest restrictions.
Conversion of export backups without directory to Several-SVID backups with directory
When switching from magnetic tape devices with small cartridges to devices with very large cartridges (e.g. LTO) it is also advisable to switch from ARCHIVE to HSMS operation since HSMS permits backups to be updated (Several-SVID format). It should also be possible to copy export backups without directory which were created on small volumes in ARCHIVE operation to updated HSMS long-term backups on large volumes. This special function for the switchover from ARCHIVE to HSMS operation is available as of HSMS V8.0A in the COPY-EXPORT-SAVE-FILE statement. Here the input save file can be specified as a volume list and the output save file in Several-SVID format with the option of continuation.
The directory created during COPY-EXPORT-SAVE-FILE can be specified as an HSMS archive directory when creating a long-term archive.