Question 72 of 1,170
Implement and Manage StorageeasyMultiple ChoiceObjective-mapped

RA-GRS: Read-Access Geo-Redundant Storage

This AZ-104 practice question tests your understanding of implement and manage storage. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A company wants its file share data to be automatically copied to a paired Azure region, and administrators want to read the secondary copy during a disaster test. Which redundancy option should they use?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

RA-GRS

RA-GRS (Read-Access Geo-Redundant Storage) is correct because it replicates data to a paired secondary region asynchronously and provides read-only access to that secondary copy. This allows administrators to read the secondary copy during a disaster test without impacting the primary region. ZRS and LRS do not replicate to a paired region, and Cool is a tier, not a redundancy option.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ZRS

    Why it's wrong here

    ZRS protects against zone outages in one region, but it does not provide a secondary region replica.

    When this WOULD be correct

    ZRS would be correct if the question required high availability within a single region by replicating across availability zones, and did not require cross-region replication or read access to a secondary copy.

  • LRS

    Why it's wrong here

    LRS keeps copies within one datacenter or storage stamp and does not provide geo-replication or secondary read access.

    When this WOULD be correct

    LRS would be correct if the question specified that cost is the primary concern and the data does not need to be available in another region, or if the application can handle its own cross-region replication.

  • RA-GRS

    Why this is correct

    RA-GRS replicates data to a paired secondary region and allows read access to that secondary endpoint. This fits the need to test or inspect the secondary copy during a disaster exercise.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Cool

    Why it's wrong here

    Cool is a blob access tier, not a storage redundancy model, so it does not address regional replication.

    When this WOULD be correct

    A question asks about cost-effective storage for infrequently accessed data in Azure Blob Storage, where the data can tolerate lower availability and higher retrieval costs. Cool tier would be the correct answer.

Option-by-option analysis

Why each answer is right or wrong

Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.

RA-GRSCorrect answer

Why this is correct

RA-GRS replicates data to a paired secondary region and allows read access to that secondary endpoint. This fits the need to test or inspect the secondary copy during a disaster exercise.

ZRSWrong answer — click to see why

Why this is wrong here

ZRS replicates data synchronously across availability zones within a single region, not to a paired Azure region, so it does not meet the requirement for cross-region disaster recovery.

★ When this WOULD be the correct answer

ZRS would be correct if the question required high availability within a single region by replicating across availability zones, and did not require cross-region replication or read access to a secondary copy.

Why candidates choose this

Candidates may confuse 'zone-redundant' with 'geo-redundant' or think ZRS provides cross-region redundancy, when it only protects against zone failures within one region.

LRSWrong answer — click to see why

Why this is wrong here

LRS only replicates data within a single datacenter in the primary region, so it does not copy data to a paired Azure region, failing the requirement for automatic cross-region replication.

★ When this WOULD be the correct answer

LRS would be correct if the question specified that cost is the primary concern and the data does not need to be available in another region, or if the application can handle its own cross-region replication.

Why candidates choose this

Candidates may confuse LRS with geo-redundant options, or think that local redundancy is sufficient for disaster recovery without reading the requirement for a secondary copy in a paired region.

CoolWrong answer — click to see why

Why this is wrong here

Cool is an access tier for Azure Blob Storage, not a redundancy option for Azure Files. It does not provide replication to a paired region or read access to a secondary copy.

★ When this WOULD be the correct answer

A question asks about cost-effective storage for infrequently accessed data in Azure Blob Storage, where the data can tolerate lower availability and higher retrieval costs. Cool tier would be the correct answer.

Why candidates choose this

Candidates may confuse 'Cool' with a redundancy option because it sounds like a storage class that might involve replication, or they may mistakenly think it relates to disaster recovery due to the word 'cool' implying low activity.

Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse 'redundancy options' with 'access tiers' (like Cool) or assume that any geo-replication option (like GRS) automatically provides read access, but only RA-GRS explicitly enables reading the secondary copy without initiating a failover.

Detailed technical explanation

How to think about this question

RA-GRS uses geo-replication with a 15-minute recovery point objective (RPO) for most data, meaning changes in the primary region are asynchronously replicated to the secondary region within that window. The read-access endpoint (e.g., `-secondary.blob.core.windows.net`) allows read operations on the secondary copy even when the primary is healthy, enabling disaster testing without failover. Under the hood, Azure Storage maintains a separate write log for geo-replication, and the secondary region is typically hundreds of miles away to ensure geographic isolation.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

What to study next

Got this wrong? Here's your next step.

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FAQ

Questions learners often ask

What does this AZ-104 question test?

Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: RA-GRS — RA-GRS (Read-Access Geo-Redundant Storage) is correct because it replicates data to a paired secondary region asynchronously and provides read-only access to that secondary copy. This allows administrators to read the secondary copy during a disaster test without impacting the primary region. ZRS and LRS do not replicate to a paired region, and Cool is a tier, not a redundancy option.

What should I do if I get this AZ-104 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 11, 2026

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