We have a large SP 2019 farm with over 30 million documents which is around ~20TB size.
Over the next few years, the data would grow exponentially and we would be around ~150 million documents and around ~100TB in size. This would become a super large farm and hard to maintain.
We need to search only the metadata of the document and no search is needed on the contents, so we are ok with moving the documents to external storage and just storing metadata in SP.
Any suggestions on external storage of documents and just storing the reference in metadata or other alternative approaches are highly appreciated