Dell Technologies Proven Professional – Midrange Storage Solutions — Question 55
A company has a Dell Unity XT 880 at its Boston site providing file storage for a business production application. The company has a second remote site 8 km (5 mi) away in Cambridge. A third site is in New York (342 km (213 mi) from the Boston site).
How can the same production data be protected against system outage with a zero RPO and a maximum of 15 minutes RPO data recovery?
Answer options
- A. Synchronous replicate from Boston to Cambridge Synchronous replicate from Boston to New York
- B. Synchronous replicate from Boston to Cambridge Synchronous replicate from Cambridge to New York
- C. Asynchronous replicate from Boston to Cambridge Asynchronous replicate from Cambridge to New York
- D. Synchronous replicate from Boston to Cambridge Asynchronous replicate from Boston to New York
Correct answer: D
Explanation
The correct answer is D because it combines synchronous replication to Cambridge, ensuring zero RPO, with asynchronous replication to New York, accommodating the longer distance and the maximum 15 minutes RPO requirement. Options A and B fail to meet the zero RPO requirement for New York, while option C does not meet the zero RPO requirement at all since it uses asynchronous replication.