Dedicated wifi for automation allows me to have devices such as Xiaomi Vaccuum, or security camera not phoning home. OpenWRT with good firewall rules completely isolate my "public" containers/VMs from my lan.
Server was built over time, disk by disk. I'm now aiming to buy only 12TB drives, but I got to sacrifice the first two as parity...
I just love the simplicity of snapraid / mergerfs. Even if I were to loose 3 disks (my setup allows me the loss of 2 disks), I'd only loose data that's on these disks, not the whole array. I lost one drive once, recovery went well and was relatively easy.
I try to keep things separated and I may be running a bit too many containers/vms, but well, I got resources to spare :)
As an FYI: this set up is vulnerable to ARP spoofing. I personally wouldn’t use any ISP-owned routers other than for NAT.
I'm not well versed in ARP spoofing attack and I'll dig around, but assuming the attacker gets access to a "public" VM, its only network adapter is linked to the openwrt router that has 3 separated zones (home lan, home automation, dmz). So I don't think he could have any impact on the lan? No lan traffic is ever going through the openwrt router.
The risk is the ISP Wi-Fi. As long as you’re using WPA with a good long random passkey, the risk is minimal. However, anyone who had access to your Wi-Fi could initiate an ARP spoof (essentially be a man-in-the-middle)
ETA: the ARP table in networking is a cache of which IP is associated with which MAC Address. By “poisoning” or “spoofing” this table in the router and/or clients, a bad actor can see all unencrypted traffic.
Well, to be honest if someone has access to my Wi-Fi, I'd consider that I've already lost. As soon as you're on my lan, you have access to a ton of things. With this setup I'm not trying to protect against local attacks, but from breaches coming from the internet