A multinational company stores large amounts of unstructured data (documents, images) that must be read with low latency from multiple global regions. Data is written primarily in one region but read globally. Cost optimization is a key requirement. Which Azure storage replication option should they use?
Trap 1: Azure Blob Storage with geo-redundant storage (GRS)
Incorrect. GRS provides a secondary region for failover, but data cannot be read from the secondary unless a failover occurs, so it does not support low-latency global reads.
Trap 2: Azure Files with premium shares
Incorrect. Premium Azure Files provide high performance but are cost-prohibitive for large-scale unstructured data and do not natively offer geo-replication for global reads.
Trap 3: Azure NetApp Files
Incorrect. Azure NetApp Files is an enterprise-grade file share service that is expensive and not optimized for cost-effective global read access of unstructured data.
- A
Azure Blob Storage with geo-redundant storage (GRS)
Why wrong: Incorrect. GRS provides a secondary region for failover, but data cannot be read from the secondary unless a failover occurs, so it does not support low-latency global reads.
- B
Azure Blob Storage with read-access geo-redundant storage (RA-GRS)
Correct. RA-GRS replicates data to a secondary region and provides a read-only endpoint, allowing low-latency reads from the secondary region without the cost of premium storage.
- C
Azure Files with premium shares
Why wrong: Incorrect. Premium Azure Files provide high performance but are cost-prohibitive for large-scale unstructured data and do not natively offer geo-replication for global reads.
- D
Azure NetApp Files
Why wrong: Incorrect. Azure NetApp Files is an enterprise-grade file share service that is expensive and not optimized for cost-effective global read access of unstructured data.