Question

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

A company is planning its data retention strategy using Azure Blob Storage. They want to store log files that are rarely accessed. The logs must be stored in the Archive tier to minimize costs, but if an anomaly is detected, the logs must be moved back to the Cool tier automatically. Is the following statement regarding Azure Storage lifecycle management true or false: You can configure a lifecycle management policy to automatically transition blobs from the Archive tier to the Cool tier when they need to be accessed again?

Answer: Answer

Answer

The statement is false because Azure Storage lifecycle management policies cannot automatically transition blobs from the Archive tier to the Cool tier.
The statement is false because Azure Storage lifecycle management is strictly unidirectional (it transitions data to cooler tiers or deletes it) and does not support automatic rehydration of blobs from the Archive tier to warmer tiers.

Step-by-Step Solution

1
Analyze the capability of Azure Storage lifecycle management policies regarding blob transition directions.
Lifecycle management policies are designed to automate transitions to cooler tiers (Hot to Cool/Cold/Archive) and delete expired data.
This determines if bidirectional automation (moving data back to a warmer tier) is supported.
2
Evaluate if rehydration from the Archive tier can be handled by these policies.
Archived blobs are offline and must be explicitly rehydrated (by copying to a new blob or changing the tier to Hot/Cool/Cold) manually or via custom code.
This identifies the limitation of lifecycle policies regarding the Archive tier.
3
Determine the truth value of the statement.
Since lifecycle policies cannot perform rehydration automatically, the statement is false.
This yields the final correct answer.

Key Concept

Azure Storage lifecycle management policies only support unidirectional transitions to cooler tiers or deletion, and cannot automate rehydration from the Archive tier.
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