On May 12, 2005, at 4:08 AM, Farren Minns wrote:

...From what I have been told, early tests have not been promising
and TSM
still thinks files have changed even if the last change date/time
etc has
not altered. Does anyone have any experience with this or any
advice they
can give that may help us avoid a long backup that will hog system
resources?
...

IBM site Technote 1154307 notes that prevailing Windows settings can
cause restored objects to inherit parental permissions, to the
exclusion of the permissions they had at backup time. This may or may
not be a factor.

Given that you have both the production and test restoral file
systems in place, you have the ideal opportunity to conduct detailed
comparisons of the same objects and directories in the two cases, and
discern differences, potentially leading to resolution of your issue.
It will be valuable to identify restored files which TSM does *not*
deem subsequent candidates for backup, as a further source of
information. Be sure to reference the client manual's summary of
backup criteria. Where TSM 5.3 is used, the new PREview command may
be helpful.

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