Hi @MatheoCaneva1 , if you have 3 Indexers (IDX), 1 Search Head (SH), 1 Heavy Forwarder (HF) and server with many roles: you should check this last one is also the Cluster Manager, in other words, if you have an Indexer Cluster, even if it's strange that you don't know if you have it! You can check this accessing this server and viewing in [Settings > Indexer Cluster]: in this dashboard, you can see if you have an Indexer Cluster and its status. About the Search Head Cluster, you surely haven't it because you have only one SH (at least three SHs are required!). The SHCD is the Search Head Cluster Deployer, a machine delegated to manage Search Head Clusters, but you haven't a Search Head Cluster so you haven't it. Distributed Search isn't a Splunk role, probably you mean Deployment Server, to manage Forwarders and eventually Search Heads (if you haven't a Cluster). Summarizing: if you have an Indexer Cluster, you have to upgrade your servers following this order: Cluster Manager (that's also DS, LM, MC) SH IDX, HF UF If you haven't an Indexer Cluster: SH IDX, DS, LM, MC, HF UF At least I hint to read this document that describes Splunk Architectures, to understand your one: https://docs.splunk.com/Documentation/SVA/current/Architectures/About Ciao. Giuseppe
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