容灾设计指标主要与容灾系统的数据恢复能力有关，最常见的设计指标有RTO 和RPO。

RPO是指能把数据恢复到过去的那一个时间点，RTO 是指在出现问题后“什么时候”可以恢复数据。

Recovery Time Actual (RTA)  is used in conjunction with RTO.

Recovery Point Objective (RPO) describes the acceptable amount of data loss measured in time.

The Recovery Time Objective (RTO) is the duration of time and a service level within which a business process must be restored after a disaster (or disruption) in order to avoid unacceptable consequences associated with a break in business continuity.

The term Recovery Consistency Objective (RCO) is used in Business Continuity Planning in addition to Recovery Point Objective (RPO) and Recovery Time Objective (RTO). It applies data consistency objectives to Continuous Data Protection services. Following the definitions for RPO and RTO, RCO defines a measurement for the consistency of distributed business data within interlinked systems after a disaster incident. Similar terms used in this context are "Recovery Consistency Characteristics" (RCC) and "Recovery Object Granularity" (ROG).