Dell EMC Specialist – Systems Administrator, Unity XT — Question 89

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 Asynchronous replicate from Boston to New York
• B. Synchronous replicate from Boston to Cambridge Synchronous replicate from Boston to New York
• C. Asynchronous replicate from Boston to Cambridge Asynchronous replicate from Cambridge to New York
• D. Synchronous replicate from Boston to Cambridge Synchronous replicate from Cambridge to New York

Correct answer: D

Explanation

Option D is correct because it employs synchronous replication to Cambridge, ensuring zero RPO, and then synchronous replication from Cambridge to New York, which also maintains a low RPO. Options A and C use asynchronous replication, which cannot guarantee a zero RPO, and option B, while using synchronous replication to Cambridge, fails to ensure the same for New York, resulting in a potential RPO exceeding the 15-minute limit.