use Tarsnap instead of S3 I'm not entirely sure what you mean by this... I mean, Tarsnap is built on top of Amazon S3, so using Tarsnap will still mean that yo

use Tarsnap instead of S3 I'm not entirely sure what you mean by this... I mean, Tarsnap is built on top of Amazon S3, so using Tarsnap will still mean that your data is ultimately stored in S3. The difference is that tarsnap would deduplicate, compress, encrypt, and sign your data first.