>I am really surprise that our S7A expire at the same speed as our old High
>node...

Frederic - Same disk hardware for the Database and Recovery Log?
           Same db hit ratio?  Database-intensive operations can benefit
from
boosts in disk technology as well as CPU technology, especially if *SM is
doing commits.  We as customers would like to see more parallelization of
database tasks; but there is the enduring problem of database conflicts,
particularly as other things are running as well, which limits how much
simultaneous work is feasible.
   Richard Sims, BU