RPO is the recovery point objective which defines the maximum acceptable amount of data loss after a system failure or disaster. It specifies how far back in time data must be recoverable to maintain business continuity. RPO is expressed in time units, such as seconds, minutes, or hours. For example, if an organisation has an RPO of one hour, it means that they can afford to lose up to one hour’s worth of data during a disruption.
Determining RPO involves assessing the frequency of data changes and the organisation’s tolerance for data loss. A shorter RPO requires more frequent backups, while a longer RPO allows for less frequent backups. RPO is crucial in disaster recovery planning as it helps organisations decide on backup strategies and technologies to minimise data loss during unexpected events.