This is applicable to all Synology NAS, not only the DS420j: The Synology DiskStation 7 software running on all Synology NAS is fantastic and a big plus. Synology applications (packages) are mature and extremely well integrated and there is a package for anything you would want to do on a NAS/server. Synology support is free and second to none. IMO, these are good reasons to buy Synology, regardless of the particular NAS you chose. I bought a DS420j to replace a DS416play now 6 years old. The RD1296 ARM CPU in the DS420j performs noticeably faster than the Celeron in the DS416play. The DS420j has “only” 1 GB of RAM, but DiskStation 7 runs ...view more