>That's not exactly what he asked about, Richard. He's referring to the
>TSM client application being able to open multiple CPU threads, not
>multiple TSM sessions.

Mark - I understand that the question was about CPU multi-threading,
       and multi-threading is the basis of the Multi-Session Client
feature, introduced in 3.7, which I cited.  The redbook exposition on
the feature explains that it can result in multiple Compare threads,
which is the phase at issue in the posting.

By all means, feel free to post supplementary information regarding
multi-threading which could aid that customer in understanding and
improving his backup performance.

  Richard Sims, BU