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Cloud Computing · Intermediate

Azure Site Recovery (ASR)

Azure disaster recovery service that replicates VMs and physical servers and orchestrates failover and failback.

Definition

Site Recovery replicates Azure VMs between regions and on-premises Hyper-V, VMware and physical servers to Azure. Recovery plans sequence failover of multi-tier apps with scripts, and test failovers validate DR without disrupting production.

Example

During a regional outage, a recovery plan fails over the database tier first and then the web tier to the secondary region.

Exam tip

Site Recovery is for replication and failover (DR); Azure Backup is for point-in-time data recovery.

Related terms