There is normally one folder under your username called Documents. Their is also a Library named Documents that contains a folder called Documents that appears to be a complete duplicate of the My Documents under your Username. The Library folder is not a duplication, but is a function of Libraries. The real My Documents files are located under your Username. You can consider the Documents in the Documents Library as pointers to your real files under your Username. Do not delete anything from either location.
Actually we have more than that, the old junction business. See attachment.
I thought i could just use the Drive folder for all Documents.
Not sure what you mean by this.
If you store your documents and files ONLY on Google Drive, then you don't have a backup. To have a backup, you need to have your files stored in more that one place. If Google Drive goes down or has a failure, you could lose access to your documents that are stored there, or you could lose the documents entirely. Likewise, if you only have your documents on your computer's hard drive, if that drive fails, your documents are lost.
If you are keeping copies of the documents on your PC and syncing them to Google Drive, then you should be in decent shape. I might still transfer them to a portable drive that could be stored off-site also.
I use 3 USB external drives to back up to. Only one is on site at a time.
When I am ready to back up, I only them hook up a drive and use Syncback to make sure the same thing is on both my hdd and the USB drive.
16 years of heirloom work , genealogy and I would really hate to lose any of the 600+ GB of data. Thinking fire, which caused a lot of data to disappear back in the 1950's, thief,floods, etc. do happen. I got robbed , lost all my desktops, but I still had all the data.
Laptop was with me, which was a big help.