To configure the tiered storage feature, set the `type` property to `custom`.

`RemoteStorageManager` is a Kafka interface for managing the interaction between Kafka and remote tiered storage solutions.
Custom tiered storage enables the use of a custom `RemoteStorageManager` configuration.
If custom tiered storage is enabled, Strimzi uses the link:https://github.com/apache/kafka/blob/trunk/storage/src/main/java/org/apache/kafka/server/log/remote/metadata/storage/TopicBasedRemoteLogMetadataManager.java[`TopicBasedRemoteLogMetadataManager`] for Remote Log Metadata Management (RLMM) configuration.
If you want to use custom tiered storage, you must first add the tiered storage plugin to the Strimzi image by building a custom container image.

.Example custom tiered storage configuration
[source,yaml,subs="attributes+"]
----
kafka:
  tieredStorage:
    type: custom
    remoteStorageManager:
      className: com.example.kafka.tiered.storage.s3.S3RemoteStorageManager
      classPath: /opt/kafka/plugins/tiered-storage-s3/*
      config:
        # A map with String keys and String values.
        # Key properties are automatically prefixed with `rsm.config.` and appended to Kafka broker config.
        storage.bucket.name: my-bucket
  config:
    ...
    # Additional RLMM configuration can be added through the Kafka config under `spec.kafka.config` using the `rlmm.config.` prefix.
    rlmm.config.remote.log.metadata.topic.replication.factor: 1
----
