The idea of cloud backups annoys me greatly. I suppose some people just don't fuss over uploading all their digital possessions to some random third party on a promise of it staying safe.... but I want my data to remain local and physical. Paranoid, I guess; until a big cloud backup server farm gets hacked.
As for non-proprietary RAID, it just makes it easier to retrieve or move your data to and from the NAS device, especially for someone working with hot-swappable hardware. A lot of times it may be easier to just physically move a hard drive to copy data rather than sending it over a network.
Synology Cloudstation option is great.
No need to worry about backups.
Your personal Google Drive or Dropbox across your devices.
Not a bad concept and since there is a Ubuntu version, I'm betting it'll run on Mint (my main desktop OS). I'll consider it, even though I'll most likely still keep doing regular backups. Will be easy with the benchmarked speeds of this unit, especially since I got GigE throughout the apartment.