CV0-003 · Question #335
A cloud administrator is managing two private cloud environments. In cloud A, the disaster recovery solution has an SLA for RPO of five minutes and RTO of one hour. In cloud B, the disaster recovery…
The correct answer is A. Tell the customer cloud A is the best solution. Cloud A's RPO of 5 minutes and RTO of 1 hour both satisfy the customer's requirements of a 15-minute RPO and 24-hour RTO, making it the best fit.
Question
A cloud administrator is managing two private cloud environments. In cloud A, the disaster recovery solution has an SLA for RPO of five minutes and RTO of one hour. In cloud B, the disaster recovery solution has an SLA for RPO of one hour and RTO of 24 hours. A new customer's application requires that, in case of a disaster, no more than 15 minutes of data can be lost, and it should be fully recovered within one day. Which of the following would be the BEST approach to this application?
Options
- ATell the customer cloud A is the best solution
- BPut it in cloud B and ask the customer to create snapshots every 15 minutes
- CBoth cloud A and cloud B would suit the customer's needs
- DChange the cloud B disaster recovery solution so RPO will be 15 minutes
How the community answered
(22 responses)- A45% (10)
- B9% (2)
- C14% (3)
- D32% (7)
Why each option
Cloud A's RPO of 5 minutes and RTO of 1 hour both satisfy the customer's requirements of a 15-minute RPO and 24-hour RTO, making it the best fit.
The customer requires RPO of no more than 15 minutes and RTO of no more than 24 hours. Cloud A guarantees RPO of 5 minutes - well within the 15-minute limit - and RTO of 1 hour, which is within the 24-hour limit. Cloud A satisfies both SLA requirements without any modification, making it the correct and sufficient choice.
Placing the application in Cloud B and creating manual snapshots every 15 minutes does not change the DR solution's contractual RPO of 1 hour, meaning recovery after a disaster could still result in up to 1 hour of data loss, violating the customer's 15-minute RPO requirement.
Cloud B does not satisfy the customer's needs because its RPO of 1 hour exceeds the required maximum data loss of 15 minutes, disqualifying it regardless of its RTO.
Modifying Cloud B's disaster recovery infrastructure is unnecessary and adds cost and complexity when Cloud A already meets both the RPO and RTO requirements out of the box.
Concept tested: Matching RPO and RTO SLAs to disaster recovery cloud selection
Source: https://learn.microsoft.com/en-us/azure/reliability/disaster-recovery-overview
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