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CV0-002 · Question #574

A cloud provider is suggesting a hot disaster recovery site to enable the customer to migrate services to them as quickly as possible in case of a failure on the primary site. Which of the following m

The correct answer is A. RPO. A hot disaster recovery site emphasizes continuous data replication, which primarily aims to minimize potential data loss during a failure. Therefore, the provider is asking the tenant to consider the Recovery Point Objective (RPO), which quantifies this acceptable data loss.

Cloud architecture

Question

A cloud provider is suggesting a hot disaster recovery site to enable the customer to migrate services to them as quickly as possible in case of a failure on the primary site. Which of the following metrics BEST represents what the provider is asking the tenant to consider?

Options

  • ARPO
  • BMTBF
  • CRTO
  • DMTTR

How the community answered

(67 responses)
  • A
    90% (60)
  • B
    1% (1)
  • C
    6% (4)
  • D
    3% (2)

Why each option

A hot disaster recovery site emphasizes continuous data replication, which primarily aims to minimize potential data loss during a failure. Therefore, the provider is asking the tenant to consider the Recovery Point Objective (RPO), which quantifies this acceptable data loss.

ARPOCorrect

A hot disaster recovery site is designed with continuous or near real-time data replication to ensure that, in the event of a primary site failure, the amount of data lost is minimal. This focus on data currency and minimizing loss is directly measured by the Recovery Point Objective (RPO), which defines the maximum acceptable amount of data loss in time.

BMTBF

MTBF (Mean Time Between Failures) is a metric for system reliability, indicating how long a system is expected to operate before failing, not a disaster recovery objective.

CRTO

While a hot site also helps achieve a low RTO (Recovery Time Objective), which is the maximum acceptable downtime, RPO specifically addresses data loss, which is a fundamental characteristic and benefit of continuous replication in a hot DR site.

DMTTR

MTTR (Mean Time To Repair) measures the average time it takes to fix a failed component or system, which is distinct from overall disaster recovery objectives for service and data restoration.

Concept tested: Disaster recovery strategies and metrics (RPO/RTO)

Source: https://learn.microsoft.com/en-us/azure/architecture/resiliency/recovery-objectives

Topics

#disaster recovery#RPO#RTO#business continuity

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