That is administratively expensive.
In my environment there is no "change control" per se for some
people. Many customers that have their own boxes; in some cases and
we have no control over what they do, although I do want to know if
those boxes are exploited in some fashion. Some of those boxes aren't
even backed up as the customer doesn't want it or elected not to pay
for it. Most of our customers your idea would work for, but getting
the tape loaded and pulling the data to a stagin area for comparison
as I said is administratively expensive.