EMC Proven Professional – Network Attached Storage Specialist — Question 11

A company has deployed a VPLEX Metro protecting two applications without Cluster Witness:
-App1 distributed virtual volumes are added to CG1, which has detach-rule set cluster-1 as winner
-App2 distributed virtual volumes are added to CG2, which has detach-rule set cluster-2 as winner
What should be the consequence if there is a WAN COM failure for an extended period?

Answer options

• A. I/O for CG1 is suspended at cluster -1; I/O is serviced at cluster-2I/O for CG2 is serviced at cluster -1; I/O is suspended at cluster-2
• B. I/O for CG1 is suspended at cluster -1; I/O is serviced at cluster-2I/O for CG2 is serviced at cluster -2; I/O is suspended at cluster-1
• C. I/O for CG1 is detached at cluster -1; I/O is serviced at cluster-2I/O for CG2 is detached at cluster -2; I/O is serviced at cluster-1
• D. I/O for CG1 is serviced at cluster -1; I/O is suspended at cluster-2I/O is serviced for CG2 at cluster -2; I/O is suspended at cluster-1

Correct answer: C

Explanation

The correct answer is C because when there is a WAN COM failure, the virtual volumes in CG1 and CG2 will be detached from their respective clusters as per the detach rules set for each. Since App1 and App2 are configured with different winners, I/O will continue to be serviced at the alternate cluster for each application, while the primary cluster will have its I/O detached.