Veritas Storage Foundation 5.1 SP1 Cluster File System Installation Guide (5900-1510, April 2011)

■ Migration of the role of the primary site to the remote site
■ Takeover of the primary site role by the secondary site
About migration and takeover of the primary site role
Migration is a planned transfer of the role of primary replication host from one
cluster to a remote cluster. This transfer enables the application on the remote
cluster to actively use the replicated data. The former primary cluster becomes
free for maintenance or other activity.
Takeover occurs when an unplanned event (such as a disaster) causes a failure,
making it necessary for the applications using the replicated data to be brought
online on the remote cluster.
Migrating the role of primary site to the secondary site
After configuring the replication objects within VCS, you can use VCS commands
to migrate the role of the cluster on the primary site to the remote cluster. In the
procedure below, VCS takes the replicated database service group, database_grp,
offline on the primary site and brings it online on the secondary site; the secondary
site now assumes the role of the primary site.
Note: The hagrp -switch command cannot migrate a parallel group within a
cluster or between clusters in a global cluster environment.
Configuring a global cluster using VVR
Using VVR commands on SFCFS global clusters
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