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AWS Certified Solutions Architect study material · question 197 of 500

What happens when an Aurora cluster's primary instance becomes unavailable?

  1. The cluster becomes read-only until an administrator intervenes
  2. A new primary is restored from the most recent snapshot
  3. Writes are queued until the primary returns
  4. Aurora fails over to an Aurora Replica, honouring the configured failover priority
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Answer: D. Aurora fails over to an Aurora Replica, honouring the configured failover priority

Aurora promotes a replica automatically, and each replica can be given a failover priority to influence which one is chosen.

Source: Amazon Aurora DB clusters (Amazon Web Services) — Amazon Aurora DB clusters

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