I'm using Google Drive, Calibre and Calibre Companion by having a one-way sync from my on-computer Calibre library to my Google Drive library. This way I won't be sunk if the Google drive library is corrupted and I can use Calibre Companion C cloud access with the Google drive library.
The possibility of the Google drive library being corrupted increases immensely if it's edited from more then one computer/device hence the one-way sync.
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