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

Cascading Failover in a Continental Cluster
Data Replication Procedures
Chapter 8392
# symmir -g <secsymdevgrpname> split
4. Re-establish the RDF volume pairs between the recovery Symmetrix
and the secondary Symmetrix. Restore the data from the recovery
Symmetrix and the secondary Symmetrix. The following shows the
command if run on a host that connects to the recovery Symmetrix:
# symrdf -g <recsymdevgrpname> -full restore
The following shows the command if run on a host that connects to
the secondary Symmetrix:
# symrdf -g <secsymdevgrpname> -full restore -bcv
5. Use the following command to check the data restore from the R2
devices in the recovery Symmetrix to the BCV/R1 devices in the
secondary Symmetrix. If the "RDF Pair STATE" column shows the
state "Synchronized" for all the devices, the data restore completed.
The following shows the command if run on a host that connects to
the recovery Symmetrix:
# symrdf -g <recsymdevgrpname> query
The following shows the command if run on a host that connects to
the secondary Symmetrix:
# symrdf -g <secsymdevgrpname> query -bcv
6. Once the copy completes, split the SRDF link between secondary
Symmetrix and recovery Symmetrix. The following shows the
command if run on a host that connects to the recovery Symmetrix:
# symrdf -g <recsymdevgrpname> split
The following shows the command if run on a host that connects to
the secondary Symmetrix:
# symrdf -g <secsymdevgrpname> split -bcv
7. Re-establish the BCV devices in the secondary Symmetrix as mirrors
of the standard devices. Restore the data from the BCV/R1 devices to
the R2 standard devices. The following shows the command if run on
a host that connects to the recovery Symmetrix:
# symmir -f <secbcvdev_textfile> -sid <secsymid> -full
restore
The following shows the command if run on a host that connects to
the secondary Symmetrix: