The underlying content binaries are distributed by either sharing a common content
store between all machines in a cluster or by replicating content between the clustered
machines and a shared store(s). The common store is simpler and more prevalent.
When using multiple content stores, each cluster stores content and retrieves content from its primary content store. Both content stores share a replicated content store. Content placed in a primary content store is copied to the replicated content store in a process known as outbound replication. The effect is that two copies of the content exist, one in the primary content store and another in the replicated content store.
If a request for that content occurs on another node, the application first looks for the
content item in the primary content store of that node. If it is not there, the application
looks to the replicated content store.
Note: If inbound replication is configured, the
replicated content store copy is then copied to the requesting node’s primary content store.