Data Engineering on Microsoft Azure — Question 18

You plan to implement an Azure Data Lake Gen 2 storage account.
You need to ensure that the data lake will remain available if a data center fails in the primary Azure region. The solution must minimize costs.
Which type of replication should you use for the storage account?

Answer options

Correct answer: D

Explanation

Zone-redundant storage (ZRS) is the correct choice because it provides high availability by replicating data across multiple zones within the same region, ensuring accessibility even during a data center failure. Geo-redundant storage (GRS) and geo-zone-redundant storage (GZRS) are more costly options that are not necessary for minimizing costs in this scenario, while locally-redundant storage (LRS) does not provide cross-zone availability.