We saw the same output to screen, you can get around this two ways. One, use
the nohup command as follows:

nohup dsmc sched 2> /dev/null &  (a nohup output file will be created in
your current location)

or to get away from having nohup output files everywhere, use your existing
method through a terminal window that you just close or leave minimized. 

Just remember to check your process with a ps -ef |grep dsmc to make sure
it's still running.

Happy TSMing,
Mark B.