TechPowerUp posted a review on the Synology RackStation RS816 4-Bay NAS
A quote from the article:
The RackStation RS816 is a rackmount NAS for small business environments in need of a capable and highly energy efficient file server. It features four drive slots packed into a 19" rack 1U height enclosure. This Synology NAS is powered by an energy efficient Marvell ARM processor.Synology RackStation RS816 4-Bay NAS @ techPowerUp