BTW, I also use git for almost all of the materials in the parent comment. I use a very small managed VPS for my git repositories.
For extra backup (in addition to git remote repositories): I have a script that mounts a EBS volume on my always running EC2 instance, does an rsync to the EBS volume of almost everything but decrypted sensitive files, and then unmounts the EBS volume. EBS volumes are reasonably reliable.
For extra backup (in addition to git remote repositories): I have a script that mounts a EBS volume on my always running EC2 instance, does an rsync to the EBS volume of almost everything but decrypted sensitive files, and then unmounts the EBS volume. EBS volumes are reasonably reliable.