You plan to store data in Azure Blob storage for many years. The stored data will be accessed rarely.
You need to ensure that the data in Blob storage is always available for immediate access. The solution must minimize storage costs.
Which storage tier should you use?
Correct Answer: A
Data in the cool access tier can tolerate slightly lower availability, but still requires high durability, retrieval latency, and throughput characteristics similar to hot data. For cool data, a slightly lower availability service-level agreement (SLA) and higher access costs compared to hot data are acceptable trade-offs for lower storage costs.
B: Archive storage stores data offline and offers the lowest storage costs but also the highest data rehydrate and access costs.
Archive – Optimized for storing data that is rarely accessed and stored for at least 180 days with flexible latency requirements (on the order of hours).