I have a single user who is using 110Gb of data in public folders, and the Exchange admin (me) is persuading them to put that data elsewhere.
What options are there for exporting this data?
What utilities exist?
Outlook can do that. Exchange on its own can't. There probably are third-party utilities around that can help, but using Outlook is probably the easiest approach.
Just open Outlook, create a PST file, right-click on the PF you want to export, select "Copy Folder" and place it in the PST archive.
Oh, and don't try to put all of that data into a single PST file. It will not end well.
There are a lot of third party tools that are available in the market to solve this kind of the problem and I have also faced a similar kind of situation to move my EDB of size 120 GB to a PST and I used a third party tool which easily copied my EDB to PST format.