If you use elastic block storage in the cloud, many times they will let you do snapshots and backups of that.
If you can't do that, make a script to make a .tgz backup and have cron do it every day and copy it up to an s3 bucket. Have the s3 bucket configured to delete items that are over a certain age.
If you can't do that, make a script to make a .tgz backup and have cron do it every day and copy it up to an s3 bucket. Have the s3 bucket configured to delete items that are over a certain age.