CCDE: Cisco Certified Design Expert (Practical) — Question 3

Company XYZ is planning to deploy primary and secondary (disaster recovery) data center sites. Each of these sites will have redundant SAN fabrics and data protection is expected between the data center sites. The sites are 100 miles (160 km) apart and target RPO/RTO are 3 hrs and 24 hrs, respectively. Which two considerations must Company XYZ bear in mind when deploying replication in their scenario? (Choose two.)

Answer options

• A. Target RPO/RTO requirements cannot be met due to the one-way delay introduced by the distance between sites.
• B. VSANs must be extended from the primary to the secondary site to improve performance and availability.
• C. VSANs must be routed between sites to isolate fault domains and increase overall availability.
• D. Synchronous data replication must be used to meet the business requirements.
• E. Asynchronous data replication should be used in this scenario to avoid performance impact in the primary site.

Correct answer: C, E

Explanation

Option C is correct because routing VSANs between sites helps isolate fault domains, which enhances overall availability. Option E is also correct since asynchronous replication minimizes performance impacts on the primary site, making it suitable for the distance involved. Options A and D are incorrect as they either misinterpret the impact of distance on RPO/RTO or suggest synchronous replication, which may not be feasible given the distance.