CompTIA Cloud Essentials+ (CLO-002)Management and Technical OperationsMedium
A cloud architect is designing a backup strategy for a critical database. The business requires that in the event of a disaster, data loss should be minimal, ideally within the last 15 minutes. Additionally, the database needs to be restored to an operational state within a maximum of 2 hours. Which two metrics are MOST directly addressed by these requirements?
- ARecovery Time Objective (RTO) and Recovery Point Objective (RPO)
- BMean Time To Recovery (MTTR) and Mean Time Between Failures (MTBF)
- CData Durability and Data Availability
- DService Level Agreement (SLA) and Service Level Objective (SLO)
Show answer & explanationAnswer & explanation
Correct answer: A. Recovery Time Objective (RTO) and Recovery Point Objective (RPO)
Recovery Point Objective (RPO) defines the maximum acceptable amount of data loss (15 minutes), and Recovery Time Objective (RTO) defines the maximum acceptable downtime or time to restore service (2 hours). These are the two metrics directly specified by the requirements.
Why the other options are wrong
- B. MTTR and MTBF are operational metrics for system reliability and repair time, not directly for business-defined recovery goals.
- C. Data durability refers to the likelihood of data loss over time, and data availability refers to uptime, neither directly defining the acceptable 'loss amount' or 'recovery time' in a disaster scenario.
- D. SLA and SLO are agreements and objectives, but RPO and RTO are the specific metrics used within these to define recovery requirements.
RPO and RTO
Recovery Point Objective (RPO) is the maximum acceptable amount of data loss. Recovery Time Objective (RTO) is the maximum tolerable duration of downtime.
- RPO measures data loss (time in the past).
- RTO measures recovery time (time to restore service).
- Crucial for disaster recovery planning and business continuity.
Memory trick: RPO is your 'Point' in the past (data loss), RTO is your 'Time' to get back (service uptime).