Backblaze employ here. We don't back up NAS, but if you direct attach a Drobo we include that in "unlimited" for $5/month. FYI - our largest customer backs up

Backblaze employ here. We don't back up NAS, but if you direct attach a Drobo we include that in "unlimited" for $5/month. FYI - our largest customer backs up about 60 TBytes for $5/month. So is it "unlimited"? If you have less than that it will work, we have proof! :-) But we lose money on that customer, we survive on the "average" amount of data people have, and on average a laptop of your average home user has only a few hundred GBytes.