Adding a node to a device domain

A device domain is a subset of nodes in a cluster that shares device resources.

If you are implementing a high-availability solution that contains independent disk pools-based technologies, such as switched disk or cross-site mirroring, you must define the node as a member of a device domain. After you add the node to a device domain, you can create a device cluster resource group (CRG) that defines the recovery domain for the cluster. All nodes that will be in the recovery domain for a device CRG must be in the same device domain. A cluster node can belong to only one device domain.

To create and manage device domains, you must have i5/OS Option 41 (HA Switchable Resources) installed. A valid license key must exist on all cluster nodes in the device domain.

To add a node to a device domain, follow these steps:

In a Web browser, enter http://mysystem:2001, where mysystem is the host name of the system.
Log on to the system with your user profile and password.
Select Cluster Resource Services from the IBM Systems Director Navigator for i window.
On the Cluster Resource Services page, select Work with Cluster Nodes task to show a list of nodes in the cluster.
On the Nodes tab, select the node that you want to add to the device domain.
From the Select Action menu, select the Properties.
On the Clustering tab, specify the name of the device domain to which you want to add the node in the Device domain field.