Yes, but zfs snapshots are not an off-site backup which is more what i am looking for. Besides this, zfs snapshots are of course something i want to implement

You did not mention where the target of the borg backup is, but you want an external service. I believe there is a service that works wells with borg backup, but have not used it.

I did write that the borg backups would be stored on an external drive, sorry that this point wasnt clearer.

I basicly for the start have one big usb 20tb hdd drive (it was discounted and costed only little more than the 12 tb same brand one) to store my backups and i plan to get more drives when i can afford them. The idea with an additional machine i had as well, but thats maybe something further down the road.

the question is that for the start, if a borgbackup of the zfs pool on an external drive with all those services would work. I am a bit worried about their databases yucking up or something.

yes this is supposed to be an off site backup. I want to backup everything with this on an external drive (later more) and keep the drive first in another room. If i can later afford more drives i want to store on at a friends place

I have 4 HDDS drives running in RAID-Z1. But yeah, the zfs snapshots on the pool itself are a no brainer :) but good to hear that they work so well

Yes, but what i am asking is more if my proposed strategy would work for an off site backup.

But the snapshots are only on the ZFS filesystem? or do you mean i should replace the borgbackup with the zfs snapshots?

I love this :D

so you basicly also recommend getting a proper case and psu to fit everything into one machine?

Yeah i assume that the hdds might be more the limiting factor. As mentioned, i am just worried about usb causing troubles with my data.

i assume you also put all your computing into the Jonsbo N3? This case also has an integrated powersupply? if yes this kinda looks a bit like what i am looking for.

well, USB is known to be kinda iffy with random timeouts etc. I dont know. I would like to have those drives in a raid5 configuration and i assume running all of this over a single connection would throttle everything down. I heard e-sata would be a better alternative but also kinda slow. my server sadly doesnt support thunderbold. Also i am a bit worried that the reading speeds would be to slow for something like jellyfin (if that isnt already the case)

Well, I want to use the hardware i have at home first bevore i buy a new nas. But having an external hdd rack would also allow me to seperate storage from computation and make everything a bit more modular

I was thinking about that as well, but I energy costs are a concern for me. May I ask how many watts your setup needs?