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Cloud Computing · Intermediate

AWS Elastic Disaster Recovery (DRS)

AWS service that continuously replicates servers into a low-cost staging area for fast recovery in AWS.

Definition

Elastic Disaster Recovery performs block-level continuous replication of physical, virtual or cloud servers into AWS, keeping lightweight staging resources until recovery is needed. It offers RPOs of seconds and RTOs of minutes, plus non-disruptive drills and failback.

Example

An on-premises ERP server is protected with DRS and launched in AWS within minutes during a data center outage.

Exam tip

DRS is the AWS DRaaS answer for low RPO/RTO server recovery; AWS Backup alone gives higher RTO.

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