PROBLEMS WITH DEDICATE DASD IN z/VM 6.1

[Victor Hugo Ochoa]

Anyone know if exist any limitation on the use of dasd's DEDICATED in z/V
M 6.1 
and/or is there some kind of problem by using dedicated DASD's in z/VM 6.
1

Thanks to all

Greetings
Victor Hugo Ochoa Avila
BBVA CCR America