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

Cascading Failover in a Continental Cluster
Recovery Cluster Package Setup
Chapter 8 377
Recovery Cluster Package Setup
This section only describes the required changes to the package control
script to support the cascading failover configuration. To create a
recovery package on the recovery cluster, the reader should follow the
procedure in “Setting up a Recovery Package on the Recovery Cluster” on
page 342. There is a slight difference from the normal
ContinentalClusters configuration in customizing the recovery package
environment file <bk_package_name>_srdf.env
1. The PKGR2SYMGRP variable should be set to the Symmetrix device
group name that was defined in the recovery Symmetrix.
2. The DEVICE_GROUP variable should be set to the Symmetrix device
group name that was defined in the recovery Symmetrix
Before running cmapplyconf command for the recovery cluster, make
sure to split the SRDF logical links, between the secondary Symmetrix
and the recovery Symmetrix, for the disks associated with the
application package. Run the following command on a node that connects
to the primary Symmetrix
# symrdf -g <prisymdevgrpname> split -rbcv -v