An organization is deploying a mission-critical line-of-business application in Azure. The architecture team has established the following storage requirements: Data must remain resilient against individual data center hardware and facility failures. Data must be synchronously copied across three separate physical availability zones within the primary region. Data must not be replicated to a secondary geographic region due to data governance and compliance policies. Which Azure Storage redundancy option should the organization select?

Zone-redundant storage (ZRS): ### What Zone-Redundant Storage (ZRS) Is **Zone-redundant storage (ZRS)** is an Azure Storage redundancy offering that synchronously replicates data across three **Azure availability zones** within the primary region. Each availability zone is an isolated physical location equipped with independent power, cooling, and networking infrastructure. ### How It Meets the Requirements - **Protects Against Data Center Outages**: Because data is distributed across three separate availability zones, a hardware or facility failure in one zone does not compromise data access or durability. - **Synchronous In-Region Replication**: Write operations are acknowledged only after being committed across the zones, ensuring strong consistency without data loss. - **Complies with Regional Residency**: All three copies remain strictly within the chosen Azure region, fully satisfying strict **data governance** and **residency** policies. ### Key Advantages and Capabilities - **High Availability**: Provides at least 99.9999999999% (12 nines) of data durability over a given year. - **Zero Regional Latency Overhead**: Replicating across local availability zones maintains low-latency performance suitable for **mission-critical applications**. - **Automatic Failover**: If a single availability zone experiences downtime, applications can immediately continue reading and writing data without manual intervention. ### Why This Is Optimal ZRS delivers the optimal balance between high availability and governance compliance. It protects workloads against localized data center disasters without routing or storing data in a secondary geographic region.

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Azure Storage Zone Redundant Storage Selection | Start here! Get your feet wet with the Microsoft cloud and begin your journey to earning your Microsoft Certified: Azure Fundamentals certification! | StudyCerts

AZ-900 Microsoft Azure Fundamentals Exam

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AZ-900 Microsoft Azure Fundamentals Exam

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