SAP-C02 Question 503
Single answerA financial services company is designing a disaster recovery (DR) strategy for its critical application hosted in AWS. The application processes sensitive customer data and cannot afford more than 15 minutes of downtime. The company also requires near-real-time data replication between the primary and DR regions. Which disaster recovery method should the company choose to meet these requirements?
- A
Backup and restore
- B
Pilot light
- C
Warm standby
- D
Multi-site active-active
Show answer and explanation
Correct answer: C
Explanation
The company requires a disaster recovery strategy that ensures a recovery time objective (RTO) of 15 minutes or less and supports near-real-time data replication. Warm standby is the best solution as it pre-provisions a scaled-down version of the application in the DR region, allowing for quick failover and recovery within the required timeframe. It balances cost-effectiveness with performance, unlike the more expensive multi-site active-active approach.
- A. Incorrect.
Backup and restore is a cost-effective method but is unsuitable for meeting a 15-minute downtime requirement as restoring backups can be time-consuming and does not support near-real-time data replication.
- B. Incorrect.
Pilot light is a lightweight DR method where only critical components are pre-provisioned, but scaling up and initiating full operations can take longer than 15 minutes, making it unsuitable for the given requirements.
- C. Correct.
Warm standby maintains a scaled-down version of the application in the DR region, allowing for faster recovery times (typically under 15 minutes) and supports near-real-time data replication, making it the best fit for the scenario.
- D. Incorrect.
Multi-site active-active involves running the application fully in multiple regions simultaneously. While it meets the requirements, it is significantly more expensive and exceeds the company's needs.