Recovery Point Objective (RPO) is a significant factor in determining system recovery planning after the disaster occurred when the specified computer, the system for the RPO or the network, and it will determine the minimum frequency must have based on frequency, then the backup. The amount of data lost in time (RPO) and recovery time (RTO) will help administrators can select a process and technology best suited to restoring the system after a disaster if, for example, RPO is equal to one hour will need to have a back up.Information at least once per hour. In this case, the hard drive external redundant storage can be regarded as the best solution to restore the system after a disaster if the RPO equal to five days (120 hours), then there must be a backup in time equal to 120 hours or less. In a situation like that. With the backup tape, it is probably sufficient.
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