Designing an Azure Data Solution (legacy) — Question 23

You plan to implement an Azure Data Lake Gen2 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: A

Explanation

The correct answer is geo-redundant storage (GRS), as it replicates data to a secondary region, ensuring high availability during a primary region failure. While zone-redundant storage (ZRS) and locally-redundant storage (LRS) provide redundancy within a single region, they do not protect against complete region outages, making them unsuitable for this requirement. Geo-zone-redundant storage (GZRS) offers both regional and zonal redundancy but is more costly than GRS.