After you have initially established your remote journal network, you need to keep up with changes that occur on the system.
If the amount of work that is going to the journals which you are replicating increases, you may need to consider upgrading the communications method.
The traffic rate for work other than the remote journal function may increase on a communications method that is shared. If this occurs, you may need to consider separating the various pieces of communications traffic so that the remote journal function is not impaired. This is especially important if you are using the synchronous delivery mode.
An application that is being protected may become more critical to your business, where any time that the system is not working is considered disastrous. If this occurs, you may need to consider upgrading that application's remote journal to using the synchronous delivery mode so that no journal entries are lost.