To replicate objects in a bucket to a destination bucket on a target site either in the same cluster or a different cluster, start by enabling [versioning](https://min.io/docs/minio/linux/administration/object-management/object-versioning.html) for both source and destination buckets. Finally, the target site and the destination bucket need to be configured on the source MinIO server.

## Highlights

To transition objects in a bucket to a destination bucket on a different cluster, applications need to specify a transition tier defined on MinIO instead of storage class while setting up the ILM lifecycle rule.

#### Key rotation

S3 clients can change the client-provided key of an existing object. Therefore an S3 client must perform a S3 COPY operation where the copy source and destination are equal. Further the COPY request headers must contain the current and the new client key:

- `X-Amz-Server-Side-Encryption-Customer-Key`: Base64 encoded new key.

<small>* estimation based on tests on an internal development team, building production applications.</small>

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