System Architecture and Reliability
In business continuity planning, which describes the RPO (recovery point objective)?
- AA target expressing up to what point in time data must be recoverable when a failure occurs (how far back data loss is tolerated)
- BA target for the time allowed from the occurrence of a failure until business operations or the system resume
- CThe average time from one failure of a system until the next
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Answer: A. A target expressing up to what point in time data must be recoverable when a failure occurs (how far back data loss is tolerated)
The RPO (recovery point objective) is a target expressing to what point in time the data must be restorable when a failure occurs. For example, an RPO of 1 hour means the data must be restorable to a point within the hour before the failure, so backups or copies of the data must be taken at least every hour. The time allowed until business resumes is the RTO (recovery time objective), and the shorter the RPO and RTO, the more the required facilities cost.
- A. Correct. It is a target that expresses the tolerated data loss as a point in time.
- B. This describes the RTO (recovery time objective).
- C. This describes the MTBF (mean time between failures).
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