Honestly, you don't need do; everything stored on S3 (unless you're storing it on RRS) is crazy redundant. Amazon claim 99.999999999% durability in any given ye

Honestly, you don't need do; everything stored on S3 (unless you're storing it on RRS) is crazy redundant. Amazon claim 99.999999999% durability in any given year: http://aws.amazon.com/s3/faqs/#How_durable_is_Amazon_S3 http://aws.amazon.com/s3/faqs/#How_durable_is_Amazon_S3 A bigger worry IMO would be accidentally deleting the files yourself (perhaps through a bug in client code). You can always enable versioning on your bucket to protect against that though.