An architecture team is designing a disaster recovery strategy for an Amazon Aurora database. They need to ensure that if an entire AWS Region goes down, the database can be recovered in a secondary region with zero data loss (RPO = 0). Is this possible with Aurora Global Database?

Answer options:

A.

Yes, Aurora Global Database uses synchronous replication across regions.

B.

No, Aurora Global Database uses asynchronous replication, so RPO=0 is not guaranteed during a hard regional failure.

C.

Yes, if you configure the Aurora cluster to use Multi-AZ across regions.

D.

Yes, by using AWS Backup to take continuous snapshots.

How to approach this question

Understand the physics of cross-region replication.

Full Answer

B.No, Aurora Global Database uses asynchronous replication, so RPO=0 is not guaranteed during a hard regional failure.✓ Correct

Cross-region replication in Aurora Global Database is asynchronous. While the lag is typically under 1 second, a sudden regional outage means any data not yet replicated is lost, meaning RPO cannot be strictly 0.

Common mistakes

Assuming 'Global' means synchronous replication.

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