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The original was posted on /r/homeassistant by /u/Substantial_Tale_405 on 2026-01-26 10:26:13+00:00.
Me: I want to build a highly available Home Assistant setup
Wife: Absolutely not.
Me: It increases reliability.
Wife: Does it increase happiness?
Me: I’ll add LEDs and mount it in a wall-mounted glass display case and make it beautiful! I promise
Wife: …go on.
Challenge accepted.
Result: A high-availability Home Assistant setup - engineered for uptime, designed for living spaces.
With so many automations keeping everything running, automatic failover became essential in case of a hardware failure.
- All mini PCs run Proxmox, providing a clean and reliable virtualization layer
- Home Assistant runs in a dedicated virtual machine
- Dual-network setup for performance and stability:
- Gbit LAN for the host OS (Proxmox)
- Gbit LAN for Ceph and shared storage
- Wall-mounted glass display case with ambient LEDs — designed to blend into the living space
- Connected to a UPS for protection during power outages
- For worst-case scenarios and maintenance work, an additional fourth node runs inside my NAS as an emergency fallback.
Is it overpowered? Absolutely. But it was a lot of fun to build - and it works flawlessly.
The tablet will feature a Home Assistant status monitor, providing instant access to all critical system information when needed.
Pictures:
Edit: Thank you very much for the overwhelmingly positive response. I honestly didn’t expect that. Thanks! I’ll try to answer all questions as best as I can. If something gets lost, feel free to send me a PM.