As the interface between the BS2000 systems and the archive system, ROBAR controls virtual or real archive systems in a multisystem environment with up to 110 BS2000 systems and as many as 1024 MTC devices (real or virtual) for an archive system. Each guest system under VM2000 counts as an autonomous BS2000 system.
Each BS2000 system can access the full functional scope of the archive system and, in terms of the devices offered by the archive system, is of equal status as regards the submission of jobs. ROBAR acts as the job submitter for the archive system. Cross-server communication and coordination between the BS2000 systems and the archive system is handled by means of ROBAR-SV on the ROBAR server.
ROBAR controls the archive systems on a hardware-dependent basis via the SCSI or ABBA interface, see section "ROBAR control interfaces".
ROBAR comprises the following software components, which can only execute together:
ROBAR-CL (decentralized ROBAR part on the BS2000 system)
ROBAR-SV (central ROBAR part on the ROBAR server)
In the sense of a client/server architecture ROBAR-CL is the client part and ROBAR-SV the server part of ROBAR.