Backup forum

I have about 1.3T of files on my Mac at work that are all synced.  I use selective sync at home to pull down files on an as-needed basis. 
I continue to find files missing when selectively synced from home.  I can confirm they are missing on the remote server using the web interface
to IDrive.   These files are missing even though they have the green "synced" icon next to each one in the IDrive-Sync folder on my work
machine and IDrive reports that "All files are up to date".  All files are NOT up to date.  The missing files seem to be randomly positioned.
Typically when a file is missing that folder is missing a few files.  How can I guarantee that the server has a complete copy of my work machine
IDrive-Sync folder?