Recovery Point Objective (RPO) Maximum data that is tolerable to lose in case of a disaster or failure, which also defines the interval between backups or replications. Service Level Agreement (SLA) A defined and agreed to service level for an application or a system. Typically refers to response times and availability levels. Disaster Recovery (DR) The ability to recover an application, system, or data center in case of a disaster. Typically involves a remote data center. Disaster Recovery Plan (DRP) A set of procedures for recovering an application, system, or entire data center in case of a disaster. Disaster Avoidance (DA) The ability to migrate seamlessly from one location to another before a disaster strikes.