Stream backup process flow description

This description provides a basic process flow. There are other processes involved that are not explicitly specified here. These processes include bpcd and some parent/child processes. Most connectivity from the server to the client initially goes through bpcd, such as initiating bphdb and writing to the progress log. And many of the processes, such as bpbrm, bptm, and so on, initiate child processes. To keep the description simple, these processes are not included in the process steps.