What is the requirement for achieving 99.9% availability in Dedicated Interconnect?

Achieving 99.9% availability in Dedicated Interconnect requires at least two interconnects in different metropolitan availability zones. This redundancy is crucial because it mitigates the risk of downtime caused by the failure of a single interconnect or its associated infrastructure. By distributing the interconnects across different availability zones, Google Cloud can ensure that even if one zone experiences issues, the other can maintain service continuity.

This design enhances fault tolerance and resilience, thus providing a higher uptime guarantee. Organizations looking to implement Dedicated Interconnect should carefully consider the architectural design to meet availability targets while minimizing latency and maintaining performance.

The choice of having interconnects solely in the same metropolitan area or relying on a single interconnect does not provide the necessary fault tolerance to meet strict availability requirements. In contrast, utilizing multiple interconnects across different metropolitan availability zones strategically aligns with best practices for high availability in cloud networking.