RPO and RTO are two of the main focusses of both backup and DR and are used to outline most strategies:
Recovery Point Objective: This is essentially ‘how much data could I lose’ before the cost outweighs the need. For example, Business A might be able to lose 1 days’ worth of data but Business B may be transaction lead and only be able to lose 1 hours’ worth of data.
Recover Time Objective: This is best described as ‘how long can my business systems be down before the cost outweighs the need’. Here, Business A might be able to cope with no business presence for 3 days while Business B might only be able to cope with full system downtime for 30 mins.
Both these aspects make up a large segment of DR plans.