This is what this looks like in practice: http://move.rupy.se/file/cluster_client.png http://move.rupy.se/file/cluster_client.png You can also use streacom cas

This is what this looks like in practice: http://move.rupy.se/file/cluster_client.png http://move.rupy.se/file/cluster_client.png You can also use streacom cases with Atom 8-core (load balancer) and Xeon for that extra kick in computing, but 3x Raspberry 4 can saturate a symmetric 1Gb/s. Rather than 1x 10Gb/s it's better to have 2x 1Gb/s (preferably distant from each other) with all passively cooled components under 60 celcius at full blast during the hottest day in summer. The whole capable of running atleast 24 hours on lead-acid backup.