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Commonly confused · Governance, Risk, Audit & Privacy

RTO vs RPO: What's the Difference?

RTO is the maximum acceptable time to restore a system or process after a disruption. RPO is the maximum acceptable amount of data loss measured in time, which determines how often you must back up or replicate.

Recovery Time Objective (RTO)

Full definition
vs

Recovery Point Objective (RPO)

Full definition
Recovery Time ObjectiveRecovery Point Objective
MeasuresDowntimeData loss
Question answeredHow fast must we be back up?How much data can we afford to lose?
LooksForward from the disruptionBackward from the disruption
DrivesRecovery strategy and site choice (hot, warm, cold)Backup frequency and replication method
ExampleEmail restored within 4 hoursNo more than 15 minutes of transactions lost
Related limitMust be shorter than MTD (maximum tolerable downtime)Lower RPO requires more frequent or continuous replication
Remember it

RPO looks back at lost data; RTO looks ahead to recovery time.

Exam tip

If a question gives a backup schedule and asks about potential data loss, it is testing RPO. RTO must always be less than or equal to MTD.

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