I had a PMR on a similiar issue some time ago (Jan 2002)
PMR 28921,469 - retention timeout for storage agent
I don't know how my 20 minutes got to be your 10 minutes, though.


Richard,
   Final answer is that it's hard-coded 20 minutes.  Hopefully, your
storage agent doesn't die very often, so it shouldn't be too much of
an issue.  If this is not the case, or if you need anything further,
please let us know.
   Thank you for using Tivoli support.
.
Yours truly,
Josh Davis - TSM/TDP Support