how can use vvr on vcs(without gco option)?

Hello

I know " VCS+VVR+GCO" solution,and I made it 3 days ago.But don't know whether can VCS support VVR without GCO option?

In" 2nodes+2arrays" environment,If one array uses FC DISK,and one uses SATA Disk,It will influence writing performance with VXVM Mirror feature,so want to use asyn replication,not syn mirror.

If yes,please share the guide.....

RL