After you have redundantly restored your data and it has been verified, you can then delete the backup from the My Book World drive to free up the space. You can then optionally continue to use MioNet or uninstall it and use the drive without it (you will still be able to access it when you are remote), and create a new backup using either Retrospect or some other software solution. If you use Retrospect Express HD 2.0 again, do not have MioNet running during the setup of the backup, that way the backup will not be put next to the Public folder opposed to inside of it.
MioNet is completely free for you and everyone you share the drive with when used with the My Book World drive. The only time you may need to pay for the Premium service is if you do things not related to the My Book World drive, like remote controlling you computer, accessing computer resources, web cams, etc.
Link: Can I use a WD My Book World (blue rings) hard drive without using MioNet?
