You might consider (a) image backup (in concert with incremental), (b)
journaled incremental or -INCRBYDATE during the week (in concert with image
and/or full progressive-incremental on the weekend).  Some folks like doing
monthly image (on a weekend) for mission critical file servers, then daily
journaled-incremental and weekly full-progressive-incremental.

You should get 5-10 GB/Hr on large file sever with lots of files;  I've done
12 GB/Hr on a benchmark-configured system (that was on NT, before Win2K --
which some report should be faster)... the key issues are (a) TSM server
speed in handling large quantities of files -- set your aggregate larger
(they recently increased max. transaction size to 2 GB), and (b) file server
capability in processing thru its directories (Unix is generally faster than
Win2K), limiting each file system to under 1 million files/directories (and
under 200 GB total size) helps... smaller becomes faster.

Don France
Technical Architect -- Tivoli Certified Consultant
San Jose, Ca
(408) 257-3037
mailto:don_france AT att DOT net

Professional Association of Contract Employees
(P.A.C.E. -- www.pacepros.com)