>Our Tuning Guide (updated for ITSM 5.2) is now available on the Tivoli Pubs 
>website...

Excellent...
I see that on web page
  http://publib.boulder.ibm.com/tividd/td/tdmktlist.html
that the guide is grouped under expanded subject area:
  IBM Tivoli Storage Manager Messages and Problem Determination
wherein the new Problem Determination Guide could be very helpful to customers.
(It also has the first formal documentation I've seen on the SHOW commands.)

      Richard Sims, http://people.bu.edu/rbs