Amazon S3 is dirt cheap. User can transfer files between machines using his/her Amazon S3. There is no limit to the number of computers you can back up using Amazon S3. Amazon S3 may take a little bit of effort to set up, since you have to sign up for an account and find your keys, but the savings is worth the extra few steps. And you’ll never have to worry about data loss on your machines again. Bottom line: recommended.
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