Hi @adamgibs, yes it's correct the number of Indexers. About Search Heads, using two SHs you are more sure that at least one is active also during maintenance or failure, but, using only two SHs you cannot configure a Cluster (you need at least three SHs), so you don't have configuration replication between SHs and you heve to manually align them. So, having you a large architecture (6 IDXs, 2 SHs, 1 MN, I DS, n HFs) I hint to add another SH and configure a Search Head Cluster so you don't have more problems about replication (Deployer doesn't need a dedicated server and can be configured on Master Node or on Monitoring Console). Ciao. Giuseppe ... View more