1.Halt the Site Controller Package.

2.Remove all the Site Safety Latch dependencies configured for the packages managed by the Site Controller Package.

Also remove the Site Controller EMS resource dependency from packages managed by the Site Controller Packages on both sites.

For example, if you have CVM or CFS configured in your environment, run the following commands from a node on both sites:

cfsdgadm delete_ems pkg1dg /dts/mcsc/cw_sc

3.Delete Site Controller Package.

Run the cmdeleteconf command to delete the Site Controller Package configuration on all the nodes.

Starting a Complex Workload

The complex workload in SADTA can be started in a Metrocluster by starting the Site Controller Package. Complete the following procedure to start the complex workload:

1.Ensure that the Site Controller Package is enabled on all nodes in the site where the complex workload must be started.

cmmodpkg –e –n <site A node 1> –n <site A node 2>\ <site_controller_package_name>

2.Start the Site Controller Package by enabling it. cmmodpkg –e <site_controller_package_name>

The Site Controller Package starts on the preferred node at the site. At startup, the Site Controller Package starts the corresponding complex-workload packages that are configured in that site. After the complex-workload packages are up, check the package log files for any errors that could have occurred at startup.

Shutting Down a Complex Workload

The complex workload in SADTA can be shutdown by halting the corresponding Site Controller Package. To shutdown the complex workload, run the following command on any node in the cluster:

cmhaltpkg <site_controller_package_name>

This command halts the Site Controller Package and the current active complex-workload packages. After shutting down, check the Site Controller Package log file and the workload package log files to ensure that the complex workload has shut down appropriately.

Moving a Complex Workload to the Remote Site

To perform maintenance operations that require the entire site to be down, you can move the disaster tolerant complex workload to a remote site. To move the complex workload to a remote site, the local complex workload configuration must be first shut down and then the remote complex workload configuration must be started.

Complete the following procedure to move a complex workload to the remote site:

1.Halt the Site Controller Package of the complex workload. cmhaltpkg <site_controller_package_name>

2.Ensure the complex-workload packages are halted successfully. cmviewcl -l package

3.Start the Site Controller Package on a node in the remote site. cmrunpkg <site_controller_package_name>

398 Designing a Disaster Recovery Solution Using Site Aware Disaster Tolerant Architecture