You can produce an allied report by scanning your dsmaccnt.log to report on large adds (Archive or Backup operations) over a long period of time, by dividing quantity of data sent to the TSM server by the number of objects, allowing you to identify nodes and users (but not filespaces) involved in biggies. This alone may be sufficient for your needs; or you might use it to perform a more limited Select on formidable tables.
Richard Sims