53. A site reliability engineer is designing a recovery strategy that requires quick fail over to an identical site if the primary facility goes down. Which of the following types of sites should the engineer consider?
Answer: B
A hot site should be considered for quick failover.
A hot site is a fully operational backup facility that mirrors the primary site, allowing for immediate failover in the event of a primary facility outage. This type of site is equipped with all necessary hardware and software, ensuring minimal downtime and a seamless transition.
A) Recovery site
A recovery site is a general term that can refer to any location designated for Disaster Recovery (DR) purposes. However, it does not specify the readiness or capability of the site in terms of immediate failover. Therefore, while a recovery site is important, it may not guarantee the quick failover that is essential in this scenario.
B) Hot site
A hot site is the ideal solution for the scenario described, as it is continuously operational and can take over immediately if the primary site fails. This ensures that services are restored with minimal interruption, making it the most suitable choice for a quick failover strategy.
C) Cold site
A cold site is a backup location that has the necessary infrastructure but lacks the immediate operational capability and data synchronization of a hot site. In the event of a primary site failure, a cold site would require significant time to become operational, thus not meeting the requirement for quick failover.
D) Warm site
A warm site is partially equipped and has some level of data synchronization, but it does not offer the immediate operational capability of a hot site. While a warm site can be a step up from a cold site, it would still result in a longer recovery time than a hot site, making it unsuitable for quick failover needs.
Conclusion
The hot site is the correct answer because it provides the necessary infrastructure and operational readiness for immediate failover. Other options, such as cold and warm sites, do not meet the requirement for quick recovery, and while a recovery site is important, it lacks the specific characteristics needed for rapid service restoration. Thus, a hot site is the most effective choice for ensuring continuity in the face of a primary facility outage.