Continuously copy important data-lake objects to another Region for disaster recovery.
Use a lower-cost retention class at the destination and define how delete markers are handled.
Which configuration is most appropriate?
Configure S3 Cross-Region Replication with Versioning and an independent destination Lifecycle policy.
Detailed explanation
Objects replicate across Regions and the destination can have its own retention and class rules.
Objects replicate across Regions and the destination can have its own retention and class rules.
DynamoDB Streams are item-change events, not S3 object replication.
DynamoDB Streams are item-change events, not S3 object replication.
S3 replication requires Versioning and loses version and delete tracking without it.
S3 replication requires Versioning and loses version and delete tracking without it.
Audit-event copies do not back up the data-lake objects.
Audit-event copies do not back up the data-lake objects.
Check official documentation
Compare the following points with the official documentation.
Amazon S3 Replication、Versioning、Replication Time Control、Lifecycleの公式説明を確認する。
What to confirm
オブジェクト複製・項目イベント・監査ログ複製の違いを説明できる。
Key points
- Cross-Region Replication
- Versioning
- Destination lifecycle
- Disaster recovery
Notes
- Environment: AWS公式DEA-C01試験ガイドと各サービスの公式ドキュメントの確認
- Confirm current AWS service behavior in the official DEA-C01 documentation.
Foundation review
Disaster recovery
Replication improves regional recovery but still requires restore, DNS, and validation procedures.
Delete semantics
Delete markers and version behavior must be designed so a source deletion does not destroy the recovery copy unexpectedly.