A company is evaluating data storage solutions.

You need to recommend a data storage solution that meets the following requirements:

Minimize costs for storing blob objects.
Optimize access for data that is infrequently accessed.
Data must be stored for at least 30 days.
Data availability must be at least 99 percent.

What should you recommend?

A. Premium

B. Cold

C. Hot
D. Archive

Explanation:
Azure’s cool storage tier, also known as Azure cool Blob storage, is for infrequently-accessed data that needs to be stored for a minimum of 30 days. Typical use cases include backing up data before tiering to archival systems, legal data, media files, system audit information, datasets used for big data analysis and more.

The storage cost for this Azure cold storage tier is lower than that of hot storage tier. Since it is expected that the data stored in this tier will be accessed less frequently, the data access charges are high when compared to hot tier. There are no additional changes required in your applications as these tiers can be accessed using APIs in the same manner that you access Azure storage.

References:
https://cloud.netapp.com/blog/low-cost-storage-options-on-azure