Me and my wife are both tech-junkies. We have a total of 12TB storage on NAS devices throughout our house. Not all is critical, but some 4TB of it is irreplaceable, family photos, videos from the last 10 years or so, documents and so on.
Currently, we backup the critical stuff onto two local devices, AND we manually take one of those drives in and out of our house for a 'low tech offsite backup solution'.
We'd like to back our critical data to a cloud base, or any other type of offsite backup. Most solutions we researched don't support NAS devices, only local drives (e.g. Carbonite). We're looking for something that would allow us to set up nightly, incremental NAS backup, offsite. We have PC's, Macs and Linux devices that can do the actual backup work off of the NAS. So it's flexible on that.
We'd welcome suggestions. Something with a reasonable price tag (not $400 a month)... would be preferable.