AZ-104 Question 76
Single answerYou are an Azure Administrator for Contoso. The company needs to create a new storage account to store large amounts of operational data that is rarely accessed. The data must be replicated to protect against regional outages, but it does not need to be readable from the secondary location. Which type of replication should you configure to meet these requirements cost-effectively?
- A
Locally Redundant Storage (LRS)
- B
Zone-Redundant Storage (ZRS)
- C
Geo-Redundant Storage (GRS)
- D
Read-Access Geo-Redundant Storage (RA-GRS)
Show answer and explanation
Correct answer: C
Explanation
GRS meets the requirement for regional redundancy without providing read access to the secondary region, which keeps costs lower compared to RA-GRS. LRS and ZRS do not replicate data across regions, so they do not protect against regional outages.
- A. Incorrect.
Locally Redundant Storage (LRS) replicates data within a single data center. It does not provide protection from a region-wide outage.
- B. Incorrect.
Zone-Redundant Storage (ZRS) replicates data across availability zones within the same region. It does not replicate data to a secondary region.
- C. Correct.
Geo-Redundant Storage (GRS) replicates data to a secondary, geographically distant region but does not allow direct read access from the secondary location. It is more cost-effective than RA-GRS if read access is not required.
- D. Incorrect.
Read-Access Geo-Redundant Storage (RA-GRS) replicates data across regions and provides read access from the secondary region, but it is more expensive and not necessary if you don't need read access from the secondary location.