This is applicable only if you are setting up DR manually in a non-shared storage environment.
To convert a local service group to a global group
or
From the Cluster Explorer configuration tree, right-click the cluster, and click Configure Global Groups.
or
From the Cluster Explorer configuration tree, right-click the service group, click Configure As Global, and proceed to step 3.
Click the name of the service group that will be converted from a local group to a global group, or vice versa.
From the Available Clusters box, click the clusters on which the group can come online. Click the right arrow to move the cluster name to the Clusters for Service Group box; for global to local cluster conversion, click the left arrow to move the cluster name back to the Available Clusters box. A priority number (starting with 0) indicates the cluster on which the group will attempt to come online. If necessary, double-click the entry in the Priority column and enter the new value.
Select the policy for cluster failover as follows:
Click Next.
At this point, you must bring the global service group online from Cluster Explorer.