I hit this stumbling block.
And I don’t quite want to go the whole hog/headache of HA.
My solution was to run warm-spare: Once a week the VM can be synced to the second box, but never powered on.
And HA backups are pretty good anyway, it doesn’t take long to bring it back.

I have the ecowitt wh51, directly with rtl_433.
It’s the 866 version.
I had to set rtl_433 to also monitor 866, but other than that, it’s been very solid for…Blimey, years now.

I go to a half-way house: Smart bulbs, dumb switches, but a zigbee button next to the switch.
1 click toggles on/off in the last state.
Press+Hold for warm-white evening.
Double-click for daytime.
And now, a sticker on the 230v switch that says “don’t switch off!”

I can second the Hue bulbs.
They’re good quality, and connect directly to a zigbee dongle without the Signiant app/Hub.

If you’re not renting, have you looked into a small MVHR unit?
It draws air in and out of the house across a matrix, which heats/cools.
This means that the air gets refreshed, without cooling it too much.

I like to dump the whole VM every so often.
Overkill? Maybe. But I like knowing that no matter how hard I cock it up, I can spin an old version up.

I’m feeling a lot less crazy having my strict rule on AV equipment:
It should work out the box without connecting to the internet, and it shouldn’t be connected without a damned good reason.
To the point that I insisted on setting up the PS5 and playing a game on it before connecting, just to be sure.

It’s approaching the cost of the monthly energy bill here :(

All 5 reform MPs are standing by to take credit.

Cornwall has been an absolute swamp this January.

It’s crazy.
I’m doing laundry, and I don’t even have to hang it up in the bathroom to dry!

Yep, through misunderstanding I left rtl_433 auto addition switched on for over a year.
I think I ended up with over 9000 unique tpms entries.
Clearing them out from MQTT was a pain in the backside, too!

A structural engineer would want to box my ears for this, but honestly…If it’s a freebie like that I’d be tempted to just put down a couple of courses of concrete blocks, then mount it on that!

Though I guess a trench, MOT, and C10 is only a weekend’s worth with a spade and a mixer.

Also, regarding not getting a straight answer out of anywhere…Honestly, if you got 4 builders to make plans, you wouldn’t get a consensus.
Unless you go down the path of putting down extension grade foundations (taking into account nearby trees, slope, clay type), filling a nice wide trench with MOT and concrete is going to be fine for a greenhouse.

What are the greenhouse plans, out of curiosity? I’ve always fancied building a wooden one.

Imo, it’s always worth making the right mix for the job.
Am I correct in assuming that you want to do foundations around the outside, then have the middle be bare soil to plant into?
Rather than having a slab, and raised beds on top?

Around the outside, maybe dig 400mm down, put in 200mm of compacted MOT, and 200mm of C10 concrete mix.
And put some rebar in if you’re feeling extra (it’s not that expensive). Just remember that if you put rebar in, it is an absolute arseache to rip the concrete up afterwards.
Though tbh, unless you’re really keen for the plants to root into the ground, I’d do a slab!

I have alerts that push out when the fridge door is open.
And another that flashes all the lights in the house when the doorbell rings.

To be honest, part of the reason I leaned towards having the radios on the same box, was simplicity.
I have a box, with a VM, VM is backed up, new box could be stood up if needed and restored from a backup.
The other was, when I knock over the network (don’t ask…), I don’t lose logged data from the various sensors.

If you did want to be able to fail over quickly, so long as you make the USB device paths match (ie, have them on the same device in proxmox), you should be able to swap things over inside 10 minutes.

Is there a particular reason you want to put your z-wave controller on the network, rather than just plugging it into the proxmox hardware? (Assuming I’ve read your post correctly). Are you looking to do high availability on the VM or something?

I found running HAOS in a VM, and passing through USB devices worked really well, and I just bought the bog-standard z-wave dongle from Aeotec.

I haven’t had a single zigbee button need a battery replacement yet.

Plus, the terrain near the coast here is an absolute bastard for point-to-point roads.
You’d struggle to make the alternative road any more efficient than the existing b-roads.