Several key concepts within the IBM i remote journal function are important to understanding its impact on MIMIX replication.
A local-remote journal pair refers to the relationship between a configured source journal and target journal. The key point about a local-remote journal pair is that data flows only in one direction within the pair, from source to target.
When the remote journal function is activated and all journal entries from the source are requested, existing journal entries for the specified journal receiver on the source system which have not already been replicated are replicated as quickly as possible. This is known as catchup mode. Once the existing journal entries are delivered to the target system, the system begins sending new entries in continuous mode according to the delivery mode specified when the remote journal function was started. New journal entries can be delivered either synchronously or asynchronously.