The Geographic Edition software enables clusters to form partnerships between clusters to provide mutual protection against disasters. The clusters in a partnership monitor each other by sending heartbeat messages to each other in the same way that nodes of a single cluster do. Unlike local clusters, the clusters in a partnership use the public network for these messages, but support additional, plug-in mechanisms as well.
You create only one partnership between two specific clusters by using the geops(1M) command. After you have created a partnership, you can use this command to modify the properties of this partnership.
Observe the following guidelines:
Unique cluster names – When creating partnerships, ensure that the name of all the clusters in the partnership are unique. For example, if you have a cluster wholly within the domain .france, you can use hostnames like paris and grenoble. However, if you have a cross-domain cluster, you must specify the hostnames with enough qualification to identify the host on the network. For example:
You can link paris and munich with hostnames paris.france and munich.germany, and the cluster names remain paris and munich.
You cannot create a partnership between clusters paris.france and paris.texas because of a collision on the cluster name paris.
Application resource group names – The names of the application resource groups that are managed by the Geographic Edition software must be the same on both partner clusters. You can configure the names of these resource groups manually.
Single partnership between cluster pairs – You can define only one partnership between two specific clusters. A single cluster can participate in other partnerships with different clusters.
Device groups – You cannot add device groups to a protection group that does not use data replication.