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

Building an Extended Distance Cluster Using MC/ServiceGuard
Two Data Centers and Third Location Architectures
Chapter 262
• Quorum Server with APA
• Quorum Server
For more information on Quorum Server, refer to the MC/ServiceGuard
Quorum Server Version A.01.00 Release Notes for HP-UX.
The following is an example of a three data center configuration using
DWDM, with arbitrator nodes on the third site.
Figure 2-4 Three Data Centers with DWDM and Arbitrators