Question 760
An architecture review recommends this solution: Use AWS Elastic Disaster Recovery with supported source replication and recovery drills. The motivating situation is: Hundreds of virtual machines require orchestrated recovery into AWS after a primary on-premises site failure. Which technical principle most strongly justifies this recommendation?
Explanation
Correct Answer
This principle explains why the prescribed control is appropriate for the described requirement. The matching design action is: Use AWS Elastic Disaster Recovery with supported source replication and recovery drills. The expected supporting evidence is: A drilled failover boots recoverable instances and meets tested recovery objectives and dependency order.
Incorrect Answers
Only source-region S3 versioning is enabled, but no replication rule or role exists. The stated evidence instead indicates: Backup images exist but no continuously replicated recovery environment or launch plan is configured.
New accounts are assembled by ad hoc scripts with inconsistent security baselines. The stated evidence instead indicates: Backup images exist but no continuously replicated recovery environment or launch plan is configured.
A single-Region Aurora cluster lacks a suitable crossregional disaster recovery target. The stated evidence instead indicates: Backup images exist but no continuously replicated recovery environment or launch plan is configured.