Dear Alexnadre,
Thank you very much for looking further into this issue, really appreciated ! I fully understand, no need to make things too complex if not really needed 
. Yes, using WEBDAV is possibly a solution but it seems there are some other issues using it, as I reported already here : WebDav connected external cloud storage - issue to access lower hierarchy folders and their content - #3 by vessovassi
Thus, I am bit stuck for the moment trying to access my exiting large data archive ‘as is’ , without importing it into the OO workspace file structure …
Hope there might be a simple solution avoiding the need to write custom connectors
Many thanks again !
Best regards,
Vesso