From the course: Microsoft Azure Fundamentals (AZ-900) Cert Prep: 2 Azure Architecture and Security

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Understand regional pairs

Understand regional pairs

From the course: Microsoft Azure Fundamentals (AZ-900) Cert Prep: 2 Azure Architecture and Security

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Understand regional pairs

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- [Instructor] Before we talk about availability zones, you should know about Azure regional pairs. Microsoft ties Azure regions, usually two, into regional pairs. These regions are connected through dedicated low-latency WAN links of less than 20 milliseconds roundtrip. And the physical separation between regions in a regional pair is at least 300 miles or 483 kilometers. Now, you may be wondering, "What's the purpose of regional pairs?" Fair question. The core reason to pair up regions into regional pairs is to facilitate cross-region data replication for high resiliency. It essentially means replicating data from one region to its pair region for redundancy, this enables support for disaster recovery. You already know what a disaster is, a catastrophic failure. So hypothetically speaking, if there's a disaster that destroys an entire region, which is your primary, a secondary region can take over and provide business continuity without data loss. That also explains why we need a…

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