My suspicion is that the legal request is a lawyer's pro forma procedure
written in the 1980s for collecting evidentiary information in a data
processing environment: "Obtain a list of the tapes upon which the data
resides". It's likely that they don't actually care what tapes are involved:
their goal is to generate a list which contributes to an impressive compendium
of factoids which fill lawyerly paper.
Given the size of TSM tables, my inclination would be to narrow down to a set
of tapes, which you know by virtue of common storage pool and perhaps
collocation by node. Then perform 'query content' on each volume, output to a
file per volume, which you can subsequently grep for containing the files of
interest. Query Content is tailored and efficient, greatly reducing time and
impact.
Richard Sims not a lawyer
