What i mean, every node is the same, no mongos , you just connect to one random mongod and it handles the mongos funcionality.
So if you grow, you add 1 node, not a replica-set(that could be 3 nodes if you have 3x replication)
So if you grow, you add 1 node, not a replica-set(that could be 3 nodes if you have 3x replication)