@Lesault I've been really tempted to have a Pi Proxmox setup running "all the things", with Pis scattered around my house powered on separate circuits for maximum resilience, including a couple running through power banks with solar panels.
But that would be overkill.
right?
(Also, do you have a writeup on your setup? I'd be interested in reading about the Caddy and Watchtower setups for that many services.)
@Lesault Many years ago, I used a "CHIP" SBC connected to a power bank with a small solar panel as home server. The power bank sat in a South-facing window, and would run it for about six hours if receiving direct sunlight (since it did use more power than the little solar panel generated.)
The CHIP even supported multi-connection WiFi, so if power (therefore internet) was out, it broadcast its own WiFi signal to connect to.
Now I have modem+router on both a UPS and solar-connected-essential-loads battery backup, so that isn't as important. I've been doing "home data storage" as just a USB drive plugged into the router; but want something more configurable. (I don't trust "private" data to that.)