I bought a ZBOX Mini PC and added a old 128GB SSD and a old 4 GB of RAM. Perfect setup for a small Windows-alike plattform. Main purpose is a running Windows 2012 R2 server for .Net / AD / IIS stuff. I really like the fan-less build and the low-power footprint of this bare-bone. But I would like to add a SATA based raid with two 512GB Sata3 drives (which are currently idling on my desk). The box does have an external e-Sata port so my guess would be that it might be possible to connect "something" on that port that would be able to handle 2 or 3 SATA drives. But I did not find anything below my hobby-190$-limit. Sharkoon does have a e-Sata raid box: https://en.sharkoon.com/product/1689/11353 but that is a oversized 5-bay solution. Maybe someone is allready working with a low-budget Raid-1 solution.