[Recipes] Amazon S3 Cross-Region Replication Lab

1. Create two buckets with default settings, but belonging to different regions. I will use btbucket1 and btbucket2

2. Click on bucket 1, go to properties.

3. Under Advanced Settings, go to Cross-region replication.

   1. It shows a message that: To use cross-region replication, you must enable versioning on this bucket and on the target bucket.

4. Click on versioning (under properties tab itself) and enable versioning.

5. Go to cross-region replication (under properties tab itself) and click enable:

   1. Provide destination region and bucket.

   2. Under Source, select whole bucket, alternate option is ‘Prefix within this bucket’.

   3. Select Destination storage class as Standard-IA.

   4. Select ‘Create new role’ option under Select Role.

6. If you click save now, you will get the error message: Destination bucket must have versioning enabled.

7. Go back to bucket2, enable versioning and follow steps 4 and 5 with one exception: the role should have been already created.

8. Once you click save, you should see no errors.

9. Upload a file into bucket1.

10. You should see the file in bucket 2 (it may take some time).

Important Notes (Exam Tips)

1. If you are doing cross-region replication on an existing bucket, the objects that are already there will not be replicated. However, once you replicate a file version, all its previous versions and permissions will also be replicated.

2. Deleting a file in bucket will delete in the replication bucket. Delete markers are replicated. However, Undo Delete is not replicated.

3. Regions must be unique: cannot use cross-region replication to replicate within same region.

4. Cannot replicate to more than one destination.