I have a WD external hard drive. It came together with a utility named WDsync. It is used to back up your files, particularly your Outlook. On the surface it appears sophisticated. Your files are stored in an encoded format and you can still browse them through the utility program (including looking at specific emails, contacts, or appointments).
However there is a slight problem – IT DOES NOT WORK WELL! Recently i reinstalled my laptop and used the WD backup to restore the Outlook content. First, instead of synchronizing the main PST file or creating a new one, the program added the old PST inside the new one, thus making it impossible simply using the Outlook. After manually organizing the outlook so it could be useful, i realized that many of my emails simply disappeared, emails in Hebrew and Russian turned out question marks or Gibberish, and all the contacts appeared in some weird format.
The bottom line is that i would not recommend anyone using this backup utility. Try finding a better one or if you already know, please share.