Or just buy an 8 TB external, hook it up to your Backblaze-enabled PC and back up your NAS to the external with rsync. And the additional benefit is that you've

Or just buy an 8 TB external, hook it up to your Backblaze-enabled PC and back up your NAS to the external with rsync. And the additional benefit is that you've also implemented 3-2-1 doing so.