AZ-104 Question 100
Single answerYou are an Azure Administrator for a company that stores application logs in Azure Blob Storage. The logs from the previous month are rarely accessed but occasionally need to be retrieved quickly for troubleshooting. The logs older than a year are primarily kept for compliance and are almost never accessed. You want to minimize overall storage costs while still being able to retrieve data when needed. Which storage tiers should you configure for these two sets of logs?
- A
Store last month’s logs in the Hot tier and last year’s logs in the Cool tier
- B
Store last month’s logs in the Hot tier and last year’s logs in the Archive tier
- C
Store last month’s logs in the Cool tier and last year’s logs in the Archive tier
- D
Store last month’s logs in the Archive tier and last year’s logs in the Archive tier
Show answer and explanation
Correct answer: C
Explanation
Costs can be substantially reduced by using a tier that matches the access pattern. The Cool tier is appropriate for infrequently accessed data needing relatively quick retrieval, while the Archive tier is best for data that is rarely or never accessed, accepting longer retrieval times in exchange for minimal storage cost.
- A. Incorrect.
Although Hot tier offers the quickest access, it is unnecessarily expensive for logs that are only occasionally needed. Cool would be more cost-effective for last month’s logs.
- B. Incorrect.
While Archive might be suitable for year-old logs, storing the previous month’s logs in the Hot tier wastes money if they’re only rarely accessed.
- C. Correct.
Cool tier is well-suited for data that is infrequently accessed yet must be retrieved quickly if needed, and Archive is ideal for rarely accessed data with the lowest storage cost.
- D. Incorrect.
Archive tier has lower storage costs but also significantly higher retrieval latency and costs; using it for last month's logs is impractical if quick access is sometimes needed.