 <p>To find the solution, I set up a virtual environment with seven Redis servers running simultaneously. They were set with sequential port numbers, with the default Redis port (6379) instance being the master. I configured two instances to be slaves to Instance_6379, and configured two more slaves each for Instance_6380 and Instance_6381, respectively. I then checked the <code>redis-cli info</code> output of each, taking note of the <code>connected_slaves</code> metric.</p> <p>Here is what I found: Masters will only report those slaves that are DIRECTLY CONNECTED to them. Slaves of slaves will NOT count towards the total number of slaves connected to the master.</p> <p>In the example image referenced in the question, the leftmost Redis server would have only two <code>connected_slaves</code> and each of its children would also show two <code>connected_slaves</code>.</p> <p>I hope this answer will be of use to someone.</p>