Hi Holger,
with TDP for Lotus Domino every database is treated as if it was one filespace. 
On your TSM Server you can see this using "q files
<nodename>".

Like with the ba-client TSM updates the filespace when you perform an 
incremental backup and otherwise leaves the filespace as it
is. So when you stop backing up a certain filespace (=domino database), this 
filespaces active files (documents) will stay unchanged
in TSM forever.

When you want to discontinue backing up a database and you don't want to keep 
this db in TSM, just delete it using "delete files
<nodename> <filespacename>" in the admin interface (dsmadmc).

Good luck,
regards,
Michael
--
Michael Bartl, Dipl. Inform. (FH)           mailto:michael.bartl AT cw DOT com
Michael Bartl, Dipl. Inform. (FH)           mailto:michael.bartl AT cw DOT com
Backup Services, IT Ops Germany/Austria     Tel: +49-89-92699-806
Cable & Wireless Deutschland GmbH.          Fax: +49-89-92699-302
Landsberger Str. 155, D-80687 Muenchen      http://www.cw.com/de