When you have calculated the insert rates into the outbound queues, you can get an idea of the network throughput required. The throughput should allow a Replication Server to send messages faster than messages are being added to the queues. Network messages are usually fractionally larger than what is written to the outbound queues.
Sometimes the queues are filled in bursts and are slowly drained through a potentially low bandwidth network. You should take this behavior into account when you calculate queue sizes and make sure that your queues can handle bursts of incoming data in addition to connection and destination site failures. In addition, monitors and counters data should be collected during different work loads to help you calculate queue sizes.
