This plugin is pretty simple. You can use Dropbox, Amazon's S3, or an FTP account to store WordPress. Need an account? Visit: Dropbox. Or, for Amazon's S3 visit: https://s3.amazonaws.com. If you decide to use an FTP account, it makes a lot of sense to use a remote FTP account on a server not shared that isn't shared with this WordPress installation.

The file that gets generated is called wpTimeMachine-archive.tar.gz[1] & will contain the following archives:

  1. wpTimeMachine-content-files.tar.gz
  2. wpTimeMachine-data-files.sql.gz
  3. wpTimeMachine-htaccess.tar.gz [2]
  4. wpTimeMachine-Instructions.txt [3]
[1] insome cases the file's name will be prepended with a timestamp
[2] if you're not using .htaccess then no, it won't be created
[3] if you're ever recovering from a catastrophic WordPress failure, this file will help
It's a good idea to store the following two items on your own, (in the same place as the files above).
Your copy of WordPress:
Your copy of wp-config.php For security purposes this file is not backed up!

Here's some relevant information to post to the WordPress forum, if you need help: