@
fredex - I have my calibre related data organised within a directory structure roughly like this, it's on my D: (Data) drive:
Calibre
Autoadd
Campaigns
2013
2016
2019
Editing
Libraries
Books
Covid-19
Intake
Journals
Media
Test
PseudoDevice
Scripts
The bolded folder names are calibre libraries, the green ones are symlinks to archival libraries on a server drive.
BR