AZ-305 Question 126
Single answerA manufacturing company stores large volumes of unstructured sensor data in Azure Blob Storage. They need a solution that allows them to recover from accidental deletions or modifications within a 14-day window, while minimizing storage costs and operational overhead. Which backup and recovery strategy should you recommend?
- A
Use Azure Backup to create full daily snapshots of the entire storage account, storing the snapshots in a secondary region.
- B
Enable Blob Soft Delete, versioning, and Point-in-Time Restore for the storage account.
- C
Configure Azure Files with Azure Backup and periodically copy data from Blob Storage to the file share.
- D
Implement a custom PowerShell script to export Blob data nightly to an on-premises file server.
Show answer and explanation
Correct answer: B
Explanation
For unstructured data in Azure Blob Storage, combining Soft Delete, Blob versioning, and Point-in-Time Restore is a best-practice approach to protect against accidental deletions or corruption. By allowing restoration of specific blobs or entire containers within a defined retention period, this strategy adheres to Microsoft documentation on Blob data protection without requiring third-party systems or excessive operational overhead.
- A. Incorrect.
Option 1: Incorrect. While Azure Backup can protect some Azure workloads, it is not designed to natively back up entire Blob Storage accounts in a straightforward daily schedule. You can use snapshots, but relying on frequent full snapshots in a secondary region can become costly and complex for large unstructured data.
- B. Correct.
Option 2: Correct. Enabling Blob Soft Delete, versioning, and Point-in-Time Restore provides a cost-effective, integrated solution for rolling back data to a previous state within a specified retention period. This combination allows you to recover accidentally deleted or overwritten blobs within the configured window (in this case, 14 days).
- C. Incorrect.
Option 3: Incorrect. This option protects data stored in Azure Files, not directly in Blob Storage. Copying data to Azure Files just for backup can add unnecessary complexity and cost, especially when Azure Blob's own built-in features can address the same requirement.
- D. Incorrect.
Option 4: Incorrect. Exporting data to an on-premises file server introduces additional hardware, network, and maintenance overhead. It might fulfill a backup requirement, but it is less efficient than using built-in cloud-based solutions that directly address accidental deletion and restore scenarios.