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Microsoft Azure Fundamentals AZ-900
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Microsoft Azure Fundamentals AZ-900 Practice Question

You are designing a storage solution for critical business data that requires high durability and availability within a single Azure region.

Which Azure Storage redundancy option should you choose?

Zone-redundant storage (ZRS)
Geo-redundant storage (GRS)
Read-access geo-redundant storage (RA-GRS)
Locally redundant storage (LRS)

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Answer Description

Zone-redundant storage (ZRS) replicates data synchronously across three availability zones within a single region, ensuring high durability and availability even if one zone becomes unavailable.

Locally redundant storage (LRS) keeps multiple copies within a single storage cluster, but all copies are in the same zone, making it less resilient to zone failures.

Geo-redundant storage (GRS) replicates data across two geographically separate regions to protect against regional outages.

Read-access geo-redundant storage (RA-GRS) provides the same cross-regional data replication as GRS but with the added capability of read access to the secondary region. However, like GRS, its primary focus is on cross-regional redundancy rather than guaranteeing availability within a single region.

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Microsoft Azure Fundamentals AZ-900

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