Getting WD Anywhere Backup to backup ALL data files

We have a data-only partition D: on our SBS2008 server.  WD Anywhere Backup won’t backup user data files in the Redirected folders due to the inbuilt security.  How can I set up a backup username which will read all these files for backup without affecting all the standard SBS2008 security permissions?

Unless someone in the forum has any ideas, I know that tech support doesn’t provide support for use of Anywhere Backup with servers.  Anyone?