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Difficulty: EasyAzure Storage Accounts, Blob, Disk, Files, and Storage Tiers

A company stores rarely accessed backup files in the Archive access tier of Azure Blob Storage. An administrator needs to retrieve one of these files to restore a database. Which action must be performed before the administrator can read the data in the file?

  1. A
    Generate a Shared Access Signature (SAS) token to download the file directly from the Archive tier.
  2. Rehydrate the blob by copying it to a Hot or Cool tier, or by changing its tier configuration.Answer
  3. C
    Map the Archive tier container as a network drive on the database server.
  4. D
    Configure a lifecycle management policy to automatically read the file directly.

Answer

Rehydrate the blob by copying it to a Hot or Cool tier, or by changing its tier configuration.
The correct answer is correct because the Archive tier is an offline storage tier. In order to read the data, the blob must first be rehydrated to an active online tier (such as Hot or Cool) either by changing its tier or by copying it to a new blob in an online tier.

Step-by-Step Solution

1
Identify the current access tier of the backup file.
The file is stored in the Archive access tier.
The Archive tier is an offline tier optimized for rarely accessed data.
2
Determine the requirement for accessing offline storage data.
The data must be brought online (rehydrated) to be read.
Direct read access is not supported on offline Archive blobs.
3
Select the correct rehydration method.
Change the tier of the blob to Hot or Cool, or copy the blob to a new blob in an online tier.
This transitions the blob back to an active state, allowing read operations.

Key Concept

Azure Storage Archive access tier requires rehydration to an online tier (Hot or Cool) before data can be read or accessed.
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Topics

Azure Storage Accounts, Blob, Disk, Files, and Storage Tiers

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