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AWS Certified Solutions Architect study material · question 164 of 500

A workload uses RDS read replicas across Regions. What must happen before the recovery Region can accept writes?

  1. The read replica must be promoted to primary, which takes minutes and involves a reboot
  2. The replica accepts writes automatically once the primary is unreachable
  3. A new database must be restored from a snapshot
  4. The replica must first be converted to a Multi-AZ deployment
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Answer: A. The read replica must be promoted to primary, which takes minutes and involves a reboot

Outside Aurora, promotion takes a few minutes and includes a reboot, which is one reason Aurora global databases are preferred for fast regional failover.

Source: Disaster recovery options in the cloud (Amazon Web Services) — Pilot light — AWS services

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