I downloaded Snapshot plugin and made one snapshot of my site. However, the file size is really smal

I'd like to take a complete backup of my site (multisite, 11 blogs, lots of images). Is this possible with the snapshot plugin? I understood it is.

I selected these options for new snapshot:

Include selected files:
Themes: All active and inactive themes will be included
Plugins: All active and inactive plugins will be included
Media Files: wp-content/uploads
wp-config.php - Your current wp-config.php file
.htaccess - Your current root .htaccess file

I directed the backup to Dropbox account. The file size there is only 14 MB. I assume it to be at least 1 GB.

My site: http://hikipisarat.net/