The continuously growing amounts of data handled in a computer center have led to increasing overheads for devices, volumes and, last but not least, personnel for storing, saving and managing the data.
HSMS (Hierarchical Storage Management System) is a software product which serves to
organize data backup and archival
optimize the utilization of external high-speed storages in a BS2000 system
transfer data
HSMS facilitates the saving of data and thus primarily supports the computer center administrator or system administrator. However, a selected set of functions for access to system backup copies, for data archival and for storage space optimization is available to ordinary BS2000 users also.
HSMS is able to process files cataloged in BS2000 (DMS), i.e. files from shared volumes (SF and SM pubsets), private disks, and Net-Storage (files both of the type BS2000 and of the type NODE-FILE).
HSMS can also back up, restore, and archive files from the local BS2000-UFS (POSIX) and remote nodes mounted in it. These files are only accessible via POSIX. They are thus not cataloged in BS2000 DMS.
Nonprivileged users can back up and retrieve files and job variables of other users if they are co-owners (see the “SECOS” manual [16]). Co-ownership in HSMS applies to files, job variables and archive. The co-ownership of an archive is implemented in HSMS by creating a co-owner for the associated archive directory.
HSMS supports large files and volumes (>= 32 GB). The following must be borne in mind here:
Large files can only be restored to pubsets designed specifically for this purpose.
Files < 32 GB which are located on pubsets which contain large volumes will be treated as normal files. They may be processed on all pubsets and also in all versions of BS2000.
HSMS V12.0 can be implemented on installations from BS2000 OSD/BC V10.0.