Please note real-time backup a network folder could be problematic; consider changing it to scheduled task.
DriveHQ Online Backup uses incremental backup and won't upload the same files again.
We have just released a new version DriveHQ Online Backup 4.0, which is designed more for businesses. We have not yet updated the website info yet; but if you go to www.drivehq.com and download it, it is actually version 4.0 now.
If you upgrade to version 4.0, please note Version 4.0 runs as a Windows System service; the default service logon account is Local System account, which has full access to your local PC, but cannot access network folders. You must change the service logon Windows User account in Windows Control Panel -> Services -> DriveHQ Online Backup Service.
More instructions will be ready in the next few days.