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

Cascading Failover in a Continental Cluster
Data Storage Setup
Chapter 8 367
Data Storage Setup
These procedures will prepare the MC/ServiceGuard clusters for use in a
ContinentalClusters Cascading Failover configuration.
Setting Up Symmetrix Device Groups
Work with your EMC support engineer to configure the devices in three
Symmetrix disk arrays. Figure 8-3 shows an example of the Symmetrix
devices setup for an application that runs on clear.
Figure 8-3 Example of Symmetrix Device Setup
Use the following steps:
1. By default, the SRDF link is configured with automatic link recovery
after all the failure of all links. Work with EMC support engineers to
disable this feature by setting the flag “Prevent Automatic Links
Recovery after all Links Failure” in the Symmetrix bin file to “Yes.”
This will keep the links from automatically trying to establish a new