CompTIA Network+ (N10-009)Network OperationsMedium
A company requires a disaster recovery solution that can restore critical applications within 30 minutes, with minimal data loss (no more than 5 minutes of data loss). Which disaster recovery site tier would best meet these aggressive Recovery Time Objective (RTO) and Recovery Point Objective (RPO) requirements?
- ACold site
- BBackup and restore
- CHot site
- DWarm site
Show answer & explanationAnswer & explanation
Correct answer: C. Hot site
A hot site provides the fastest recovery with minimal data loss because it is a fully equipped, continuously updated replica of the primary data center. This aligns with the aggressive RTO of 30 minutes and RPO of 5 minutes.
Why the other options are wrong
- A. A cold site has basic infrastructure but no equipment or data, leading to a very long RTO and RPO.
- B. Backup and restore is a method of data recovery, not a site tier, and its RTO/RPO depends heavily on the backup frequency and restore speed, often not meeting such aggressive targets.
- D. A warm site has equipment but requires data restoration and configuration, leading to a moderate RTO and RPO (hours to days).
Hot Site
A disaster recovery site that is a fully operational, continuously updated replica of the primary data center, designed to allow for immediate or near-immediate failover with minimal data loss and downtime.
- Lowest RTO (Recovery Time Objective).
- Lowest RPO (Recovery Point Objective).
- Most expensive to maintain due to full redundancy and synchronization.
Memory trick: DR sites go from Hot's speed to Cold's savings.