Backup Client S3 has been designed to make it easy to move your website backups to a offsite storage (it doesn't do any good to backup your website locally if your webserver dies).
Quick start guide to offsite storage:
All you need is some patience with Amazon's confusing menus and a credit card. There is no money up front so you can try it out for a while and see how it goes. Our first month's bill was US$0.34 (and we uploaded a lot of test backups). Your goal is to get two keys from Amazon: an `Access Key` and a 'Secret access key`. Trust me, it is worth the effort. Start by visiting the Amazon S3 landing page.
You'll need the two keys above. Type them in and press `Save Configuration` on this page.
Goto the "Amazon S3" tab (admin/build/backupclient/s3) and press the "Upload latest backup now" button.
We hope this module is useful to you and look forward to your suggestions (and preferable patches) in the future.
Be safe - backup early, backup often!