Synology DiskStation DS414j NAS to 4 HDD 3.5 "/ 2.5" USB 3.0 / LAN Black (Accessory)
not too expensive a four bay. does the job just fine for home use. Basic setting not too complicated (and very complicated if we want to set full of debts, rights, cloud, external access ....). For the investment against the NAS is not enough: I had