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Difficulty: MediumConfigure Blob Storage Lifecycle and Replication

An administrator plans to perform a live migration of a standard General Purpose v2 (GPv2) storage account named `stbackup2026` from Locally-redundant storage (LRS) to Zone-redundant storage (ZRS). The storage account contains some older database backup files that are currently stored in the Archive access tier. Which action must the administrator perform before initiating the live migration request?

  1. Rehydrate the archived blobs to either the Hot or Cool access tier.Answer
  2. B
    Temporarily disable all active lifecycle management policies on the storage account.
  3. C
    Change the default access tier of the storage account from Hot to Cool.
  4. D
    Assign the Storage Blob Data Owner role to the Microsoft support service principal.

Answer

Rehydrate the archived blobs to either the Hot or Cool access tier.
The correct answer is to rehydrate the archived blobs to either the Hot or Cool access tier. Azure Storage live migration from LRS to ZRS (or GRS to GZRS) does not support accounts containing archived data. Therefore, all blobs in the Archive tier must be transitioned back to an online tier (Hot or Cool) before requesting the live migration.

Step-by-Step Solution

1
Check the storage account configuration and identify all blobs currently residing in the Archive access tier.
A list of archived blobs is identified.
Azure Storage live migration from LRS to ZRS does not support storage accounts that contain archived data.
2
Rehydrate the archived blobs by changing their access tier to Hot or Cool.
The blobs are transitioned to an online tier (Hot or Cool), which may take several hours depending on the rehydration priority selected.
Transitioning the blobs back to an online tier satisfies the prerequisite that no archived data exists in the storage account during migration.
3
Submit the live migration request to Azure support after the rehydration completes and all blobs are online.
The replication conversion from LRS to ZRS begins.
Microsoft Support can perform the live migration without downtime only when all account prerequisites are met.

Key Concept

Live migration from Locally-redundant storage (LRS) to Zone-redundant storage (ZRS) requires that the source storage account contains no blobs in the Archive tier. Any archived data must be rehydrated to an online tier (Hot or Cool) before the migration can proceed.
Estimated Time:1m 30s
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Topics

Configure Blob Storage Lifecycle and Replication

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