back-up system
Back-up System 
In computing, duplicate computer system that can take over the operation of a main computer system in the event of equipment failure. A large interactive system, such as an airline's ticket-booking system, cannot be out of action for even a few hours without causing considerable disruption. In such cases a complete duplicate computer system may be provided to take over and run the system should the main computer develop a fault or need maintenance.
Back-up systems include incremental back-up and full back-up.
Back-up systems include incremental back-up and full back-up.
© RM 2009. Helicon Publishing is division of RM.
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