HP EVA Cluster Extension Software Administrator Guide (5697-2445, July 2013)

When setting up a consolidated DR site configuration (see Figure 3 (page 10)), consider the
following:
• EVA Cluster Extension uses the unit of DR groups as the failover unit. This means all vdisks or
members of a DR group will be failed over if the cluster software moves disk access from one
cluster node to another.
• EVA Cluster Extension does not directly support managed sets. However, applications that
consist of more than one DR group in one or more EVA storage systems can be supported by
EVA Continuous Access as managed sets.
• If necessary, you can configure managed sets by creating Cluster Extension EVA resources
that include the DR groups included in the managed set and configuring them in the same
application service group (cluster group).
Figure 3 Consolidated DR site configuration
Processes and components
EVA Cluster Extension is shipped as a resource DLL for MSCS.
Windows installation of EVA Cluster Extension includes a CLI for custom HP EVA Continuous Access
integration. Customized solutions for failover application services must implement EVA Cluster
Extension through the CLI prior to the disk activation procedure.
10 HP EVA Cluster Extension features