If you are using SnapDrive software, use SnapMirror to replicate your data.
For more information, see the SnapDrive Installation and Administration Guide for your version of SnapDrive.
SnapDrive supports the use of volume SnapMirror in the asychronous mode. For volume SnapMirror in the sychronous or semi-synchronous mode, you need to use SnapDrive 5.0.