Question
Your company has datacenters in Los Angeles and New York. The company has a Microsoft Azure subscription.
You are configuring the two datacenters as geo-clustered sites for site resiliency.
You need to recommend an Azure storage redundancy option.
You have the following data storage requirements:
✑ Data must be stored on multiple nodes.
✑ Data must be stored on nodes in separate geographic locations.
✑ Data can be read from the secondary location as well as from the primary location
Which of the following Azure stored redundancy options should you recommend?
- A. Geo-redundant storage
- B. Read-only geo-redundant storage Correct
- C. Zone-redundant storage
- D. Locally redundant storage
Explanation
Read-access geo-redundant storage (RA-GRS, listed here as read-only geo-redundant storage) copies data three times within the primary region and asynchronously to a secondary region hundreds of miles away, so data is stored on multiple nodes in separate geographic locations, and it also allows read access to the secondary region. Geo-redundant storage (GRS) replicates to the secondary region but does not allow reads from it unless a failover occurs. Zone-redundant and locally redundant storage keep data within a single region.
