Which term is defined as a percentage measurement of computing power needed based on the required percentage of the production system during a disaster?

The correct term that defines a percentage measurement of computing power needed based on the required percentage of the production system during a disaster is RSL, which stands for Recoverable Service Level. RSL is crucial in disaster recovery planning as it establishes the necessary computing resources required to maintain operational functionality during a disruption. It is focused on quantifying the resources that must be allocated to ensure that critical services can be delivered even when faced with a disaster scenario.

In contrast, MTD (Maximum Tolerable Downtime) refers to the maximum length of time that a system can be down before seriously impacting the organization. RTO (Recovery Time Objective) indicates the targeted time frame for restoring a system after a disaster occurs, defining how quickly a business wants to recover its operations. RPO (Recovery Point Objective) specifies the maximum acceptable amount of data loss measured in time. While all these concepts are integral to disaster recovery, RSL specifically addresses the proportion of computing power required during a disaster scenario, making it the correct term in this case.