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
- version backup
HSMS distinguishes between the three storage levels S0, S1 and S2, which are also addressed as such in HSMS statements and BS2000 commands.
Overview of HSMS storage levels:
storage level | HSMS utilization | Volume | Access | Access time |
S0 processing level | Archive management | Disks | Online | Very short |
S1 background level | Archival, backup, version backup and migration | Disks | Online | Short |
S2 archive level | Archival, backup, version backup and migration | Magnetic tape cartridges | Online | Long |
HSMS will be introduced on your system in the near future.
The following pages discuss in detail the repercussions of utilization optimization by means of the “migration” function, since this will also affect non-HSMS users.
Further information on the data backup, archival, and data transfer functionalities can be found in “HSMS Volume 1: Functions, Management and Installation”.