Wifi or Cable – and I already know the answer: “do not ever even think about connecting your homeassistant server to wifi, always use the cable”
But why? One argument I have seen here is: “because it is a server”
I sure understand if it is just picking one, I would pick the cable just because I believe it is better. Unfortunately in real life there are also other aspects which make this choice harder. All the other you can argue about but in the end of the list might be wife factor ….
So what do you consider as wifi? Might be a stupid question but I ask it anyway. I have two homeassistant instances one in countryside another one in town. I happened to pick TP-Link Deco M5 mesh network to both location – all together 10 units. I am basically pleased with them. Later on I realized this bad feature with them -> when you lose wan connection the LAN cable port in main Deco loses the Lan connection. So if internet goes down my homeassistant server loses the control for instance to wifi switch which takes care of heating …
In my countryside location my homeassistant server is not connected to main Deco. It is connected with the cable to a slave Deco unit which is connected with wifi to the main Deco. It does not lose lan when internet goes down and it still controls for example heating. So the question is – is that arrangement considered as wifi connection? It works very well. What happens if I switch that cable to wifi connection directly on my server (NUC)?
In town my server (NUC) is connected with the cable to the main Deco. Internet is very stable here, but still I would change it to wifi, if I knew it is not a disaster.
So I understand cable is more stable. But is it really so bad thing to connect the server to wifi directly. And if it is why – “because it is a server” is not answer I am looking for.