I've been considering a similar solution, but rather than use two external drives. I'm thinking about using 1 and placing it on a relative's network and backing up to that. Though my two concerns are primarily security related 1) while in transit across the net, and 2) while being stored, I want to keep that relative or anyone that may visit said relative from getting nosey. Transfer speed isn't too much of a concern for me since my data doesn't change that much, so the incrementals should be pretty small.
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I've been considering a similar solution, but rather than use two external drives. I'm thinking about using 1 and placing it on a relative's network and backing up to that. Though my two concerns are primarily security related 1) while in transit across the net, and 2) while being stored, I want to keep that relative or anyone that may visit said relative from getting nosey. Transfer speed isn't too much of a concern for me since my data doesn't change that much, so the incrementals should be pretty small.