Question:
Beta Enterprises operates an application in Azure that handles sensitive data. Due to data residency laws, they cannot replicate their data outside of their country, but they still want to maintain high availability within their region. In addition, they require read access to their data even if one of the zones in their region goes down. Which storage redundancy option is most suitable for Beta Enterprises?
Answer:
ZRS is the best choice for Beta Enterprises as it keeps the data within the same region (complying with data residency laws), but also replicates it across different availability zones for high availability. If one zone goes down, the data is still accessible from the other zones. GRS-RA and GZRS-RA wouldn't comply with Beta's data residency requirements because they replicate data to a secondary region which could be outside of their country. LRS would comply with the data residency laws, but it wouldn't provide the desired level of availability as it only maintains replicas within a single data center.