I felt the Synology solution was probably too expensive
I've sold numbers of Rack Station to my customer to be used as their non-critical data backup repository.
Most of them at first were unsure with Synology performance mainly because of the price tag. But after using it for few years, they now have a farm of Rack Station 😁😁
I know there are a couple of other ones out there. I think some of them are open source which kind of appeals to me, but I am not going to be here forever and at the end of the day you just can't beat how easy the Synology is to use.