[theintern]

You can create your own DSM powered NAS using Xpenology to load the DSM software on normal hardware.

It's more fiddling but you can get a very powerful NAS very cheaply this way.

[sjwright]

Xpenology is like a hackintosh. Once it's running you get 98% of the day-to-day experience, but not the absolute seamlessness of everything working without hacky installation steps, rough edges and questionable ethics vis a vis software licensing.