My advice: Get a Synology, they are a bit more expensive but as "idiot-proof" as a NAS can be. Mine continuously synchronizes with my OneDrive so I always have an up to date copy available. Additionally, I have a third, versioned backup on a friend's NAS (and he has a backup on mine) in case I get crypto-locked and my files get encrypted.
My advice: Get a Synology, they are a bit more expensive but as "idiot-proof" as a NAS can be. Mine continuously synchronizes with my OneDrive so I always have an up to date copy available. Additionally, I have a third, versioned backup on a friend's NAS (and he has a backup on mine) in case I get crypto-locked and my files get encrypted.