Oracle® Solaris Cluster Geographic Edition Data Replication Guide for EMC Symmetrix Remote Data Facility

Exit Print View

Updated: July 2014, E39668-01
 
 

Recovering From a Switchover Failure on a System That Uses SRDF Replication

Basic Geographic Edition operations such as geopg switchover, perform a symrdf swap operation at the SRDF data replication level. In SRDF terminology, a switchover is called a swap. The symrdf swap operation requires significantly more time for static RDF than dynamic RDF. Therefore, you might need to increase the value of the timeout property of the protection group when using static RDF.

If all of the SRDF commands return a value of 0, the switchover is successful. In some cases, a command might return an error code (a value other than 0). These cases are considered switchover failures.

If a switchover failure occurs, the secondary volumes might not be fully synchronized with the primary volumes. Geographic Edition software does not start the applications on the new intended primary cluster in a switchover failure scenario.

The remainder of this section describes the initial conditions that lead to a switchover failure and how to recover from a switchover failure.

This section contains information about the following topics: