CV0-002 · Question #587
A cloud engineer is building a disaster recovery plan for a private cloud. Business requirements state that recovery must be to a separate DR location and that RPO and RTO must be minimized. Which of
The correct answer is C. Asynchronous replication to another site 700mi (1126km) away. To minimize RPO and RTO for a disaster recovery plan requiring a geographically separate DR location, asynchronous replication over a long distance is the best solution.
Question
A cloud engineer is building a disaster recovery plan for a private cloud. Business requirements state that recovery must be to a separate DR location and that RPO and RTO must be minimized. Which of the following disaster recovery solutions BEST meets these requirements?
Options
- ASynchronous replication to another site 700mi (1126km) away
- BSynchronous replication to another site 50mi (80.5km) away
- CAsynchronous replication to another site 700mi (1126km) away
- DAsynchronous replication to another site 50mi (80.5km) away
How the community answered
(53 responses)- A11% (6)
- B6% (3)
- C60% (32)
- D23% (12)
Why each option
To minimize RPO and RTO for a disaster recovery plan requiring a geographically separate DR location, asynchronous replication over a long distance is the best solution.
Synchronous replication over a distance of 700 miles would introduce excessive latency, severely impacting application performance and preventing the minimization of RTO.
Synchronous replication to a site only 50 miles away might not provide sufficient geographical separation to protect against regional disasters affecting the primary location.
Asynchronous replication is the most practical solution for achieving a robust disaster recovery posture over a long distance (700 miles) without severely impacting the primary site's performance. While it introduces a small RPO, synchronous replication over such a distance would incur unacceptable latency, rendering the primary system unusable and making recovery difficult, thereby failing to minimize RTO effectively.
Asynchronous replication to a site only 50 miles away does not provide as robust geographical separation as a 700-mile distance, which is crucial for comprehensive disaster recovery plans.
Concept tested: Disaster Recovery RPO/RTO with Replication Types
Source: https://learn.microsoft.com/en-us/azure/site-recovery/concepts-replication-architecture
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