Restoring data

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If a disaster occurs in the primary data center, you can continue to provide business support if you have a valid backup. You restore the backup to the secondary data center and then verify the restored data.

About this task

Restoration is the process of rebuilding all or part of a backup to the corresponding secondary environment, as shown in this diagram. In this case, Backup N-2 was not successful. Backup N-3 was immediately run to replace it.
Figure 1. Restoration process
Picture of the run time, configuration, and installation data being replicated on a remote storage system.
Important: To ensure the consistency of all data, the restoration must occur for the whole cell and underlying database.

Procedure

To restore the production environment to the secondary environment, complete the following steps:

  1. Reinstall the installation data, including the IBM® Business Automation Workflow installation data.
  2. Reinstall Db2® and create the Db2 instance.
  3. Restore the configuration data to all servers from the backup configuration data.
  4. Restore the runtime data to all servers by replicating the backup runtime data.
  5. Perform changes that are specific to the environment.
    For example, update the host name to reflect the secondary environment, or change the data source configuration to point to the secondary database.
  6. Validate the connectivity to the resources outside the recovery scope.
  7. To restart the environment, follow these steps:
    1. Start the database server.
    2. Start the deployment manager and node agents.
    3. Start the message servers of IBM Business Automation Workflow.
    4. Start the support servers of IBM Business Automation Workflow.
    5. Start the application servers of IBM Business Automation Workflow.
  8. Verify the restored environment and determine whether it is valid.
  9. Recover inflight transactions.
  10. Redirect load to the new environment.
    Tip: You can typically set the same host name and IP address for the secondary environment as for the primary environment. This step depends on your backup policy.