Does this have a backplane?
More than likely. Since the description clearly states “8x3.5 HDD Hot-Swap drive bays.” It’s not the only case of similar form factor that you can get 8 hot swap drive bays. There are literally tons of NAS case designs to choose from.
I’ve had a look and sadly, they are not available in Europe (at least for any reasonable price).
I’ve built every NAS/home server I’ve ever had. There’s lots of options out there for the case as well. You could take an SFF Mini ITX case with a single 5 1/4" drive bay and put an icy dock 8 x 2.5" SATA backplane in it. Don’t know if icy dock (brand) is widely available in Europe…
Just pointing out that if you imagine it (form factor with 8 hot swappable drives) there’s probably a solution to build it from scratch.
You could do all that, yes - but that’s not really “replacing” a Synology IMHO. The point is that you don’t really have to think about putting it all together correctly - put the drives in, install your OS of choice and that’s it.
