I have two hard drives, one larger than the other, with the smaller being backed up the larger. When the smaller drive is filled, or when it fails, then I simply buy a new drive, still larger, and the previous larger becomes the new smaller. So far there is no end in view in this process.
I also have everything in an encrypted online backup with CrashPlan.
If it's worth saying, but not worth its own post, then it goes here.
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