Archival purpose ... well then, how important is it to retain the 'who done it' table? That table is usually the largest table and thus could have 1G (millions of rows) in the sql dump. If it's not important, truncate that table before the dump.
Often ask K12 entities that question ... 'How important is the who done it table?' Since they are not looking to track who did what beyond a single academic year, truncating that table has resulted in sql dumps being multiple gigs less.
'spirit of sharing', Ken