A healthcare company must retain patient X-ray images for 7 years to meet regulatory compliance.

The images are frequently accessed during the first 30 days. After 30 days, they are rarely accessed. After 1 year, they are almost never accessed but must be kept for the remaining 6 years. You need to design a storage solution that minimizes costs.

Which Azure Storage lifecycle management policy should you implement?

Answer options:

Store in Hot tier initially. Move to Cool tier after 30 days. Move to Archive tier after 365 days.

Store in Cool tier initially. Move to Archive tier after 30 days.

Store in Hot tier initially. Move to Archive tier after 30 days.

Store in Premium Block Blob tier. Move to Cool tier after 365 days.

How to approach this question

Map the timeframes to the storage tiers: Frequent = Hot, Infrequent = Cool, Rarely/Never = Archive.

Full Answer

A.Store in Hot tier initially. Move to Cool tier after 30 days. Move to Archive tier after 365 days.✓ Correct

Azure Blob Storage offers different access tiers optimized for cost. The Hot tier has the highest storage cost but lowest access cost, ideal for the first 30 days. The Cool tier has lower storage costs but higher access costs, ideal for data older than 30 days. The Archive tier has the lowest storage cost but highest retrieval cost and latency (hours), making it perfect for the 1-to-7 year compliance retention period. Lifecycle management policies can automate these transitions.

Common mistakes

Skipping the Cool tier and going straight to Archive, which can result in massive rehydration costs if data is accessed.

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