...
> We don't want the want the incremental backup to run.
...

As others have pointed out, TSM doesn't provide the exclusion
granularity you really need to prevent the client admin from just
running 'dsmc i' backups.
Perhaps the closest thing is to do 'UPDate Node ... MAXNUMMP=0',
to be in effect during the day, to prevent Backup and Archive,
but allow Restore and Retrieve.

  Richard Sims, BU