Disaster recovery (DR) is an area of security planning to protect an organization from the effects of a disaster – such as a cyber attack, equipment failure or natural disasters.
Recovery point objective (RPO) and recovery time objective (RTO) are two important measurements in disaster recovery and downtime. The ability to resume complete IT operations within a specific amount of time is RTO and at a specific point is RPO. For example, if an organization has an RPO of two hours, the system must back up at least every two hours. And the recovery time objective is the maximum amount of downtime an organization can handle. A shorter RTO indicates a quicker recovery time. The RPO and RTO help administrators choose optimal disaster recovery strategies, technologies and procedures.