In a lights-out factory scenario, what's the single point of failure that keeps you awake at night, and how would you design redundancy for it?

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You know, when I think about running a lights-out factory that operates 24/7 with minimal human intervention, the single point of failure that really keeps me up at night is the central control system - specifically the PLCs and automation controllers that orchestrate everything. It&#39;s like the brain of the entire operation. If that goes down, the whole factory grinds to a halt, and there&#39;s no one physically there to troubleshoot.For redundancy, I&#39;d implement a dual-redundant PLC system where two controllers run in parallel. The primary handles all operations while the secondary runs in hot standby mode, constantly syncing data. If the primary fails, the backup kicks in seamlessly within milliseconds - no production interruption. I&#39;d also add redundant power supplies with automatic transfer switches, redundant network paths using ring or mesh topologies, and cloud-based backup control that can take over if both local systems fail.The key is designing for automatic failover at every critical point, so the factory can literally heal itself while we&#39;re sleeping!

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