I have 3 separate machines:
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That fat home server with NAS and VM’s etc.
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A Pi serving my smart home.
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A plastic router with OpenWrt doing DNS and (I like to believe) some security, and giving WiFi to many small devices.
They all run 24/7 but I just don’t want everything to be dead and dark when one machine is down for whatever reason.
Reminds me of my childhood :-)
In high school we used to play card games. I was wearing glasses. The others (the smart ones only) could see my cards in my glasses, until I learned how to hold my cards properly and hide them.