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Cloud Computing · Intermediate

Disaster Recovery as a Service (DRaaS)

Cloud service that replicates servers and data to a provider and orchestrates failover so workloads can recover after a disaster.

Definition

DRaaS continuously or periodically replicates on-premises or cloud workloads to a provider's infrastructure and provides orchestrated failover and failback. It lets organizations achieve low RTO and RPO without maintaining a secondary data center.

Example

Azure Site Recovery replicates on-premises Hyper-V VMs to Azure and fails them over during an outage.

Exam tip

DRaaS removes the cost of an idle secondary site; on exams it is often the answer for small organizations needing a warm or hot site.

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