The image shows a simple sharded database Raft replication deployment with 6 shards, 12 replication units, and replication factor = 3.

Each shard has two leaders and 4 followers. Each member is labeled with an RU number and the suffix indicates whether it is a leader (-L) or follower (-Fn). The leaders are also indicated by a star. In this configuration, two shards can take over the load of a failed shard.