Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Metropolitan Cluster Using MetroCluster/CA
Maintaining a Cluster that uses MetroCluster/CA
Chapter 3 115
Failback
After resynchronization is complete, you can halt the package on the
failover site, and restart it on the primary site. MetroCluster will then
swap the personalities between the PVOL and the SVOL, returning
PVOL status to the primary site.