Sun Cluster Geographic Edition Data Replication Guide for EMC Symmetrix Remote Data Facility

How the Data Replication Subsystem Validates the Device Group

The Sun Cluster Geographic Edition data replication layer validates the protection group's replication role against the configuration of the EMC Symmetrix Remote Data Facility RDF1 and RDF2 devices. If the configurations do not match, the validation returns an error.

If the Cluster_dgs property is specified, then the data replication layer verifies that the device group specified is a valid Sun Cluster device group. The data replication layer also verifies that the device group is of a valid type.

Note –

The device groups that are specified in the Cluster_dgs property must be written to only by applications that belong to the protection group. This property must not specify device groups that receive information from applications outside the protection group.

A Sun Cluster replication resource group is automatically created when the protection group is created.

Caution – Caution –

Do not change, remove, or bring offline these resources or resource groups. Use only Sun Cluster Geographic Edition commands to administer replication resource groups and resources that are internal entities managed by Sun Cluster Geographic Edition software. Altering the configuration or state of these entities directly with Sun Cluster commands could result in unrecoverable failure.