Important S3 objects must be replicated continuously to another Region.
Recover from deletion or overwrite while preserving protection of the replicated data.
Choose TWO appropriate design elements.
Enable versioning on both buckets and configure S3 Cross-Region Replication so object versions are copied to the destination Region.
Detailed explanation
CRR continuously copies eligible objects to a bucket in another Region.
CRR continuously copies eligible objects to a bucket in another Region.
DNS failover changes the name-resolution destination and does not copy object data.
DNS failover changes the name-resolution destination and does not copy object data.
Replication uses object versions to track changes and supports recovery from overwrite or deletion.
Replication uses object versions to track changes and supports recovery from overwrite or deletion.
Public access weakens the data boundary and is not required for replication.
Public access weakens the data boundary and is not required for replication.
Check official documentation
Compare the following points with the official documentation.
Amazon S3 Cross-Region Replicationとバージョニングの公式説明を確認する。
What to confirm
データ複製とDNSフェイルオーバーの役割を区別できる。
Key points
- S3 Cross-Region Replication
- Versioning
- Destination Region
Notes
- Environment: AWS公式S3ドキュメントの確認
- Confirm current AWS service behavior in the official documentation.
Foundation review
Data versus name resolution
CRR moves object data, while Route 53 changes where clients resolve a name; they solve different parts of a DR design.
Recovery history
Versioning preserves earlier object states so overwrites or deletes can be recovered when policy permits.