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

Physical Data Replication for ContinentalClusters Using EMC SRDF
Maintaining the EMC SRDF Data Replication Environment
Chapter 7356
# cmviewconcl -v
Normal Maintenance
There might be situations where a package has to be taken down for
maintenance purposes without having the package move to another
node.
The following procedure is recommended for normal maintenance of
the ContinentalCluster with EMC SRDF data replication:
1. Shut down the package with the appropriate command. Example:
# cmhaltpkg <pkgname>
2. Distribute the ContinentalClusters configuration changes. Example:
# cmapplyconf - P <pkgconfig> (Primary cluster)
# cmapplyconf -P <bkpkgconfig> (Recovery cluster)
3. Start up the package with the appropriate MC/ServiceGuard
command. Example:
# cmmodpkg -e <pkgname> (Primary cluster)
NOTE Never enable package switching on both the primary package and
the recovery package.
4. Halt the monitor package:
# cmhaltpkg ccmonpkg
5. To apply the new continental cluster configuration:
# cmapplyconcl -C <configfile>
6. Restart the monitor package:
# cmrunpkg ccmonpkg
Some Further Points
Following are listed some EMC Symmetrix specific requirements:
• R1 devices must be locally protected (RAID 1 or RAID S); R2 devices
must be locally protected (RAID 1, RAID S or BCV)