there's not much to it really. you just build a bare-minimum PC and then put some decent hard drives in it. the drives are going to dominate the total cost of a

there's not much to it really. you just build a bare-minimum PC and then put some decent hard drives in it. the drives are going to dominate the total cost of any reasonable NAS build. if you want something like 24GB plus an extra for parity, that's ~$600 in storage right there. you might be able to get it down to $800 if you really cheap out on the other components, but $1000 would get you something that could double as a decent home server (current gen desktop cpu, 32GB ram, etc). I wouldn't recommend putting used hard drives in a NAS. the main point of a NAS is to be resilient storage. buying drives of uncertain provenance is just setting yourself up for pain.