How to Enable Cross-Region Replication in Amazon S3

Cross-Region Replication (CRR) in Amazon S3 is a feature that automatically replicates objects from one S3 bucket (source bucket) to another bucket in a different AWS region (destination bucket). This ensures better data availability, disaster recovery, and compliance. In this article, we’ll walk you through enabling CRR step by step.

Steps to Enable Cross-Region Replication

Step 1. Log in to the AWS Management Console.

1. Open the AWS Management Console.
2. Use your credentials to log in.
3. Search for S3 in the search bar and click on it.

Step 2. Select the Source Bucket.

1. In the S3 dashboard, locate the list of your S3 buckets.
2. Select and click the source bucket you want to replicate from the source bucket.
   

Step 3. Enable Versioning on the Source Bucket.

1. Inside the source bucket, go to the Properties tab.
   
2. Scroll down to Bucket Versioning and click Edit.
   
3. Enable versioning by clicking the Enable button, then save changes.
   

Step 4. Choose the Destination Bucket.

1. Create or select a destination bucket in a different AWS region.
2. Ensure versioning is also enabled for the destination bucket follow the same steps as above.
   

Step 5. Configure Replication Rules.

1. Go back to the source bucket and navigate to the Management tab.
   
2. Click Create Replication Rule and provide a name for the rule e.g., CRR-Rule.
   
   
3. Set Permissions for Replication.
4. AWS will prompt you to create or select an IAM role.
5. Choose the auto-generated role or create a new one to grant permissions for replication.
   
6. And then click save.
   
7. The last option is to submit all the configurations.
   

Step 6. Verify the Replication.

1. Upload an object to the source bucket and click on the upload button.
   
   
2. Now Check the destination bucket to confirm that the object has been replicated.
   

Conclusion

Enabling Cross-Region Replication (CRR) in Amazon S3 helps keep your data secure and accessible in multiple regions, ensuring better disaster recovery and compliance. By following the easy steps outlined in this article, you can quickly set up CRR and protect your data. Be sure to test your setup and monitor it regularly to make sure everything is working smoothly.