I’m currently traveling for months at a time and my homelab has become unreachable to me over VPN due to a unknown complication after a power outage.

Just as a learning experience for all, my mistake was that I set-up my VPN very far down the stack - as a wg-easy app inside TrueNAS SCALE’s apps ecosystem. My very important reason for doing it was that way was that wg-easy allows for setting up client devices with a QR code…

Anyway, the NAS is not booting back up nor do the TrueNAS apps. I should’ve set my VPN up right at the front of the network - on my MikroTik router that also supports Wireguard. The funny thing is I was so happy that my NAS has IPMI and whatnot but now I can’t even access it.

For now the NAS is kept powered on from what I know, it just doesn’t boot. This should help prevent bitrot until I’m back. All important files are backed up on a 3rd party service.

It’s a shame my Jellyfin and Navidrome inaccessible, but I’ll live.

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Now I’m thinking about buying an UPS so that this doesn’t happen in the future. I’d like the UPS to be fanless and rackmount, so that limits me to ~700VA territory.

Devices in my homelab pull about 65W idle and spike to say 150W when everything is booting. ISP modem, router, POE+ switch, AP, NAS. I might add another 20W due to a Lenovo M920q in the future.

I only really care about NUT and graceful shutdown instead of long runtime on battery.

I was thinking about this: https://www.apc.com/us/en/product/SMT750RMI2U/

In my country I can get it with new batteries (no front panel) and a network card for NUT for a total of 180 EUR.

Would that work? Would you be afraid of leaving an UPS (it is kinda like a bomb after all) unattended an leaving your home for 6 months at a time?