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Difficulty: EasyData Redundancy and High Availability

A company is planning the storage architecture for a new application. The business requirements state that the data must be replicated synchronously across three separate availability zones within the primary region to ensure high availability. Which two Azure Storage replication options should you recommend to meet this requirement? (Select two.)

  1. Zone-redundant storage (ZRS)Answer
  2. Geo-zone-redundant storage (GZRS)Answer
  3. C
    Locally redundant storage (LRS)
  4. D
    Geo-redundant storage (GRS)

Answer

Zone-redundant storage (ZRS) and Geo-zone-redundant storage (GZRS)
The correct options are Zone-redundant storage (ZRS) and Geo-zone-redundant storage (GZRS). ZRS replicates data synchronously across three availability zones in the primary region. GZRS combines the high availability of ZRS in the primary region with asynchronous replication to a secondary region, meaning both options meet the requirement of synchronous zonal replication in the primary region.

Step-by-Step Solution

1
Analyze the primary region replication requirement.
The requirement specifies synchronous replication across three availability zones within the primary region.
This determines that the storage account replication tier must support zone-redundancy in the primary region.
2
Evaluate the replication behavior of each storage tier in the primary region.
Zone-redundant storage (ZRS) and Geo-zone-redundant storage (GZRS) both replicate data synchronously across three zones in the primary region. Locally redundant storage (LRS) and Geo-redundant storage (GRS) only replicate within a single zone/datacenter in the primary region.
Comparing the options isolates the two that satisfy the zone-redundancy requirement.

Key Concept

Azure Storage Zone Redundancy
Estimated Time:45s
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Topics

Data Redundancy and High Availability

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