A disaster recovery (DR) solution is a series of procedures used to safely and efficiently restore application data and services in the event of a catastrophic failure. A typical disaster recovery solution requires that you have a source host on the primary site and a destination host on the secondary site. The application data is stored on the primary site and replicated to the secondary site by using a tool such as the Volume Replicator. The primary site provides data and services during normal operation. If a disaster occurs on the primary site and its data is destroyed, a secondary host can take over the role of the primary host to make the data accessible. The application can be restarted on that host.

This chapter is an overview of the Volume Replicator disaster recovery solution that can be used with SFW HA and VCS. SFW HA also supports array-based hardware replication. SFW HA provides a configuration wizard for disaster recovery, which can be used with either Volume Replicator or hardware replication.

For details on configuring SFW HA disaster recovery using the wizard:

See Tasks for a new disaster recovery installation - additional applications.

For details on SFW and Volume Replicator configuration with Microsoft clustering:

See Tasks for deploying InfoScale Storage and Volume Replicator with Microsoft failover clustering.

The following illustration shows the SFW HA-Volume Replicator configuration with VCS. The example has one disk group on each site for the application. Note that a Volume Replicator Replicator Log is needed on each site. If there is more than one disk group, an additional Replicator Log is required for each disk group.