Encryption
Security is an ever-growing concern and encryption is a great step to achieve this. This page will provide a comparison between encrypted data and a normal single drive and what impact it will have on the performance. Not all NAS feature Full volume and Shared Folder encryption, but I will test what is available.
Folder Encryption
Very strong NAS. True it has plastic housing, but it is still a Synology
You might want to remove the pic with the serial number or at least make it unreadable. XPEnology users might hijack your serial to enable their non-Synology hardware to use QuickConnect. Speaking from experience. ;-)