Use the vradmin command to start replication or the transfer of data from the primary site to the secondary site over the network. Because the cluster on the secondary site uses only one host name, the command does not require the sec_host argument.
To start replication using automatic synchronization
vradmin -g disk_group -a startrep pri_rvg sec_host
where:
disk_group is the disk group on the primary site that VVR will replicate
pri_rvg is the name of the RVG on the primary site
sec_host is the virtual host name for the secondary site
For example:
# vradmin -g oradatadg -a startrep rac1_rvg clus2