Maximum Acceptable System Unavailability Time

Maximum Acceptable System Unavailability Time

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Question

What can be defined as the maximum acceptable length of time that elapses before the unavailability of the system severely affects the organization?

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A. B. C. D.

B.

One of the results of a Business Impact Analysis is a determination of each business function's Recovery Time Objectives (RTO).The RTO is the amount of time allowed for the recovery of a business function.If the RTO is exceeded, then severe damage to the organization would result.

The Recovery Point Objectives (RPO) is the point in time in which data must be restored in order to resume processing.

Reference(s) used for this question: BARNES, James.

C.

& ROTHSTEIN, Philip J., A Guide to Business Continuity Planning, John Wiley & Sons, 2001 (page 68)

and And: SWANSON, Marianne, & al., National Institute of Standards and Technology (NIST), NIST Special Publication 800-34, Contingency Planning Guide for Information Technology Systems, December 2001 (page 47).

The correct answer is B. Recovery Time Objectives (RTO).

Recovery Time Objectives (RTO) is defined as the maximum amount of time it should take for a system to be recovered after a disruption or outage, without causing significant harm to the organization. In other words, RTO is the amount of time an organization can afford to be without a particular system before significant negative consequences occur.

RTO is an important metric for disaster recovery and business continuity planning. It helps organizations determine how quickly they need to restore critical systems and services in the event of an unexpected disruption, such as a cyber attack, natural disaster, or human error.

Recovery Point Objectives (RPO) is a related concept that refers to the maximum amount of data loss an organization can tolerate. RPO helps organizations determine how frequently they need to back up their data to ensure they can recover to a point in time that is acceptable.

Recovery Time Period (RTP) and Critical Recovery Time (CRT) are not commonly used terms in the field of disaster recovery and business continuity planning.

Therefore, option B - Recovery Time Objectives (RTO) is the correct answer to the question.