EMC Proven Professional – Information Storage Associate — Question 4

You created a synchronous consistency group, which contains two distributed volumes configured with the rule "set cluster-1-detaches".
What is the expected behavior of the virtual volumes in the event of a WAN-COM failure?

Answer options

• A. cluster-2 is declared the winner after 5 seconds and I/O will continue at that cluster.
• B. I/O will continue at both clusters.
• C. I/O will be suspended at both clusters until the WAN-COM is repaired.
• D. cluster-1 is declared the winner after 5 seconds and I/O will continue at that cluster.

Correct answer: A

Explanation

The correct answer is A because when a WAN-COM failure occurs, the system defaults to the cluster that remains connected after a brief waiting period. Options B and C are incorrect as they suggest that I/O operations would either continue on both clusters or be suspended, which contradicts the behavior defined by the 'set cluster-1-detaches' rule. Option D is also wrong since it states that cluster-1 would be the winner, while in this scenario, cluster-2 takes precedence.