AZ-104 Question 74
Single answerYou manage an Azure Storage account used for storing critical business data. The data must remain highly available in the event of a region-wide outage, and your organization needs the ability to access a read-only copy of the data in the secondary region for disaster recovery. Which replication strategy should you use to meet this requirement?
- A
Locally Redundant Storage (LRS)
- B
Geo-Redundant Storage (GRS)
- C
Read-Access Geo-Redundant Storage (RA-GRS)
- D
Zone-Redundant Storage (ZRS)
Show answer and explanation
Correct answer: C
Explanation
Read-Access Geo-Redundant Storage (RA-GRS) is specifically designed to replicate data to a secondary region while allowing read access to the secondary copy without initiating a failover. This meets the requirement of high availability in the event of a region-wide outage and provides a read-only copy for disaster recovery.
- A. Incorrect.
LRS only provides redundancy within a single data center in one region and doesn’t offer a secondary region copy.
- B. Incorrect.
GRS creates a copy of data in a secondary region but doesn’t allow read access to that secondary copy unless a failover is triggered.
- C. Correct.
RA-GRS provides geo-redundancy and also allows read access to the data in the secondary region without requiring a failover.
- D. Incorrect.
ZRS replicates data across availability zones in the same region, not across multiple regions.