An information processing system includes three storage apparatuses installed
on three sites for the purpose of disaster recovery. The three storage apparatuses
can be accessed by three information processing apparatuses, respectively, that
are configured in a cluster. One of the storage apparatuses is set as a replication
source and the other two storage apparatuses are set as replication destinations.
The two storage apparatuses that are set as replication destinations manage a copy
of data stored in the storage apparatus that is set as the replication source.
In association with an execution of a failover on the information processing apparatus
side, settings of the storage apparatuses as the replication source and replication
destinations are automatically changed such that the storage apparatus that is
set as the replication source function as a replication destination, and one of
the storage apparatuses that are set as the replication destinations function as
a replication source.