E20-820 Exam Questions

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Vendor: EMC
Exam Code: E20-820
Exam Name: CLARiiON Solutions Expert Exam for Technology Architects

QUESTION 1
CE Casinos, Inc. has an application that gathers statistics from slot machines and saves the data to a CLARiiON LUN. Because I/O sizes are small, typically 8 KB or smaller, and the access pattern is very random, RAID-1/0 was chosen for the LUN, which is 512 GB in size. I/Os are consistent at 100 writes/s for 24 hours a day. This LUN must be replicated to a CX400 at a test site 10 km away for read-only data analysis. Data collection occurs between 8 am and 8 pm, and the analysis runs from midnight until 4 am. The link between sites is a dedicated 90 Mbps connection. What is the best solution for the customer’s needs?

A.    Take a SnapView Snapshot of the Production LUN at 8 pm each night, and use SAN Copy to perform a full copy to the remote site. Stop the Session once analysis is complete.
B.    Clone the Production LUN. Fracture the Clone at 8 pm each night, and use SAN Copy to perform a full copy to the remote site. Resynchronize the Clone once analysis is complete.
C.    Mirror the Production LUN. Fracture the Mirror at 8 pm each night, and use a SnapView Snapshot of the secondary image for analysis. Resynchronize the Mirror once analysis starts.
D.    Clone the Production LUN. Fracture the Clone at 8 pm each night, and use Incremental SAN Copy to perform a copy to the remote site. Resynchronize the Clone once analysis is complete.
E.    Use Incremental SAN Copy to a remote LUN with the Production LUN as the source, and run the update at 8 pm each night. Use a Snapshot of the remote LUN for the analysis. Stop the SnapView Session once the analysis completes.

Answer: C

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