Using ontape -r to start a cold full system restore!

Dear all, I have a level-0 backup archive of IDS 7.31 and i want to restore it in another host. Now i met some problems. Can i change the rootdbs location to a new one? For example: when i use onstat -d in the IDS instance host and it will show: /dev/vx/rdsk/datadg/lvrootdbs is the location of rootdbs. But in the new host, i want restore the rootdbs to a new location, maybe change it to /dev/rdsk/lvrootdbs. Can i do it use ontape tool? OR someone knows use some other IDS tool to make a archive, and then change the location of database space during the restoring process? It is very appreciate of your point.