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

Building an Extended Distance Cluster Using MC/ServiceGuard
Two Data Center Architecture
Chapter 2 55
FibreChannel Using Switches
The two data center architecture is also possible over longer distances
using FibreChannel switches. The following is one example of a switched
two data center configuration using FibreChannel and FDDI
networking.
Figure 2-2 Two Data Centers with FibreChannel Switches and FDDI