I wonder what the overhead is like on 13TB of data. I have about 80GB with Backblaze right now -- just documents, photos and music on my laptop -- and the meta

I wonder what the overhead is like on 13TB of data. I have about 80GB with Backblaze right now -- just documents, photos and music on my laptop -- and the metadata it stores in /Library/Backblaze.bzpkg takes up 46GB, or about half the size of the actual backup. Most of this is in uncompressed plain-text log files showing every file which has been backed up, going back years. On a 256GB SSD that overhead hurts. I asked their support, but their only solution was to delete the backup, reinstall the client, and start from scratch, which seems... less than optimal. (On the other hand I do understand the impulse to squirrel away terabytes of data... I now make a point of archiving all of my mail accounts and PDFs of papers I read, knowing that with good search, they'll be valuable for years to come. But I haven't quite read 13TB worth of papers yet.)