[haunter]

>What models are new enough to consider?

Depends on really what do you want to do. For just data storage, NAS, pretty much anything goes. If you want to run VMs, Docker etc. you want something newer. Personally I use Optiplex Micro 3080 with i5-10500T. That was 270€ refurbished.

>Do any of these support ECC ram

No, as far as the Dell, Lenovo, HP mini PCs goes.

>And would you say mirrored ZFS is good enough for home use?

Yes but reading your use case you probably don't want a mini PC. You can only have 1x 2.5" SSD and 2x NVMe SSD. A single 8TB NVMe SSD is currently 1000€ and you would need two. Unless you want something smaller of course.

[flexd]

I have a older Intel S2600CP dual Xeon board now, which still works fine, but is a huge SSI-EEB board and draws like 90W mostly idle.

I think most of my use-case could be covered by one or more mini pcs, since I mostly run stuff like Home Assistant and other small things in containers. But for storage I'm not sure what makes sense now. I went with zraid2 back then (in 2015) because I already had four of the 3TB disks, so purchasing two more was worth it for the cost and extra parity drive.

But now I'm not sure if ZFS is the right choice. I think now you can expand pools with more disks, in theory anyway, but I never tried it.

I don't know what options I should consider, and why. Unraid for example looks promising, since you can just keep adding disks.

Realistically most of what I have on the server is replaceable, I really only care about personal photos/videos/documents.

If I am replacing hardware to lower power consumption/electricity cost, spending lots of money to do so does not really make much sense. I would very much like to get 90W+ of heating power out of my home office though, it's noticeably cooler in the room if I turn off the server and other computer(s). Less spinning disks and less hardware would help with that part, but other than making the office cooler I don't think I would save that much money (initially anyway).

The disks I have are from 2015, so probably better to make a choice for hardware/disks now than having to emergency purchase one or more of them to replace failing ones.

[haunter]

I'd probably just buy a Synology station. Yes it's proprietary but the system itself is really good. I know a lot of people buy one just for its own photos system alone https://www.synology.com/en-global/dsm/feature/photos

[flexd]

The problem with those is that they are insanely expensive for what you get. Here locally the DS423+ (4-bay one) is like $614 USD + shipping without any disks, and has a Intel Celeron J4125 and 2GB ram. They are unfortunately ridiculously overpriced

[haunter]

Yes that's true!

You should look around on /r/homelab there are some nice low power consumption builds there, for example this one

https://www.reddit.com/r/homelab/comments/1935nar/homelab_na...

[flexd]

That's a good tip, thanks! I have a older i7-6700K machine around here somewhere, that could work. But no ECC ram, and no idea if it draws any less power in the end. Some setup with just two drives mirrored would likely work, but feels a bit risky having no parity drive