The TSM 5.3 Technical Guide redbook touches on this, and refers
to further information in the Admin Guide, topic
"Consolidating Multiple Clients under a Single Client Node Name".
The client manual discusses the proxy support.

    Richard Sims

On Aug 31, 2005, at 10:28 AM, David E Ehresman wrote:

I found the following in the 5.3 client README in the
  What's new in the IBM Tivoli Storage Manager Version 5.3.0 Clients:
section.

    - Multiple nodes can backup, archive, restore and retrieve objects
      under a single node

*-------
How would this new functionality be used?

David