For static gallery generation, I use a project called sitelen-mute.
https://github.com/kensanata/sitelen-mute
No affiliation with either tools.
I have found this though, which lets me fetch the photos via iClouds (I guess I prefer that to google, and I can script it rather than do it via the web).
My entire digital footprint is just 2 TiB, so the NAS has my back covered for several years now, and probably will for a few more years.
Does the encryption key also live in the NAS as well? Is it like, sitting there?
The older Gen8 boxes Just Work.
The newer Gen10 boxes hang the first time you boot, you need to pause it and set the hw.pci.realloc_bars loader variable to 1. Details here: https://www.virten.net/2017/10/fix-for-freenas-on-hpe-micros...