To ensure resilience and minimize the recovery point objective (RPO) with no impact on applications, using a dual-region bucket with turbo replication is the best approach. Here's why option D is the best choice:
* Dual-Region Buckets:
* Dual-region buckets store data redundantly across two distinct geographic regions, providing high availability and durability.
* This setup ensures that data remains available even if one region experiences a failure.
* Turbo Replication:
* Turbo replication ensures that data is replicated between the two regions within 15 minutes, aligning with the requirement to minimize the recovery point objective (RPO).
* This feature provides near real-time replication, significantly reducing the risk of data loss.
* No Impact on Applications:
* Applications continue to access the dual-region bucket without any changes, ensuring seamless operation even during a regional failure.
* The dual-region setup transparently handles failover, providing uninterrupted access to data.
Steps to Implement:
* Create a Dual-Region Bucket:
* Create a dual-region Cloud Storage bucket in the Google Cloud Console, selecting appropriate regions (e.g., us-central1 and us-east1).
* Enable Turbo Replication:
* Enable turbo replication to ensure rapid data replication between the selected regions.
* Configure Applications:
* Ensure that applications read and write to the dual-region bucket, benefiting from its high availability and durability.
* Test Failover:
* Simulate a regional failure to verify that the dual-region bucket and turbo replication meet the required RPO and ensure data resilience.
Reference Links:
* Google Cloud Storage Dual-Region
* Turbo Replication in Google Cloud Storage