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Hello,
I'm a graphic designer with over 15 years of workload. This obviously equates to extreme files sizes. I was disappointed to learn Dropbox don't offer a package for single users over 3TB....
@shinbeth
good to know on Sync.. I'm going to start testing some options.
In your particular case, have you considered the iCloud backup? You can get up to 12TB and since your backup sounds Mac centric that might be good.