We use JungleDisk for all of our dev machines for nightly development directory backups.
If you are looking @ storing ~100GIGs online, one choice would be shared hosting, or a virtual server. This would allow you to use FTP or SFTP to copy over all the files, as well as access.
If you are so inclined, you can put a CMS like Drupal or WordPress to front-end the site, make the site password-only, and use a web front-end to access your files & content.
