Certified Incident Handler (CIH) Practice Ecam

Which of the following is the most expensive recovery approach where the workload runs simultaneously in several regions?

1. Multi-site active/active

2. Pilot light

3. Warm standby

4. Single-site recovery

The correct answer is: Multi-site active/active

The most expensive recovery approach where the workload runs simultaneously in several regions is the multi-site active/active strategy. In this model, multiple data centers or regions are configured to share the workload and provide redundancy. Each site can handle the production workload, ensuring high availability and immediate failover capabilities. This simultaneous operation requires maintaining multiple active systems, which incurs significant costs due to hardware, software, networking resources, and ongoing operational expenses. By contrast, the other approaches typically involve a more cost-effective recovery model. For example, a pilot light strategy involves maintaining a minimal footprint of the infrastructure that can be scaled up when needed, but it does not keep simultaneous active workloads running. Warm standby refers to having a partially active recovery system that can be activated more quickly than a cold site but is still not running live workloads concurrently. Single-site recovery focuses on having a backup at a different location that becomes active only during a failure, making it a less expensive option than multi-site active/active. Overall, the multi-site active/active strategy offers maximum uptime and resiliency, but this comes at a higher price point compared to the other recovery approaches.