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Backup systems (BS)

A backup system (BS) is a set of hardware and software facilities required to implement a fault-tolerant infrastructure. Fault tolerance is provided by copying the data of all current services to the designated storage, with the further possibility of their accurate recovery. It is possible to restore not only the entire service, but also individual items, such as mail server messages and database server transactions. Also, thanks to this system, it is possible to create backup copies of any data.