On a Win 8.1 PC, upgraded from OneNote 2010 to 2013 to 2016 but files are still in ...\14.0 and ...\15.0 backup directories in addition to the ...\16.0 backup directory. Total disk space used by the notebooks on the PC is approximately 50GB while the space used by the notebooks on Onedrive is approximately 6GB. I understand that OneNote keeps a local copy of notebooks on the PC so that OneNote can be used while disconnected from the Web. I need to keep this functionality. What can I do reduce the save space used by OneNote notebooks on the PC?
If I turn off backup, will this remove the backup copy of the files previously backed up or just the backup of future files?
How do we optimize the cache?