ZRS live migration question

[samabc]

You have an existing Azure subscription that has the following Azure Storage accounts.
Name Kind Performance Replication Access Tier
tdaccount1 General-purpose V2 Standard Locally-redundant storage (LRS) Cool
tdaccount2 General-purpose V2 Premium Read-access geo-redundant storage (RA-GRS) Hot
tdaccount3 General-purpose V1 Premium Geo-redundant storage (GRS) None
tdaccount4 BlobStorage Standard Locally-redundant storage (LRS) Hot

There is a requirement to identify the storage accounts that can be converted to zone-redundant storage (ZRS) replication. This must be done only through a live migration from Azure Support.

Which of the following accounts can you convert to ZRS?

tdaccount2
tdaccount1
tdaccount3
tdaccount4

Correct answer per TD is tdaccount1. But Perplexity.ai seems to think tdaccount2 is correct also and I think I agree.
“To convert to ZRS using live migration from Azure Support, the account’s replication type must first be changed to either Locally-redundant storage (LRS) or Geo-redundant storage (GRS) before proceeding to ZRS.

This is because direct conversion from RA-GRS to ZRS is not supported without first switching replication settings.

This prerequisite does not preclude a live migration but involves a two-step process: first changing the replication to LRS or GRS via the portal, CLI, or PowerShell, and then requesting conversion to ZRS through Azure Support.”

[JR-TutorialsDojo]

Hello samabc,

Thank you for reaching out.

Based on the configuration of Azure Storage accounts and the requirement to convert to Zone-redundant storage (ZRS) via live migration through Azure Support, only tdaccount1 meets the eligibility criteria for direct migration.

tdaccount1 is a General-purpose v2 account with Standard performance and locally redundant storage (LRS) replication. This configuration is fully supported for ZRS migration via Azure Support. https://learn.microsoft.com/en-us/azure/storage/common/redundancy-migration?tabs=portal

While tdaccount2 is a General-purpose v2 account, it uses Premium performance and Read-access geo-redundant storage (RA-GRS) replication. Azure does not support direct migration from RA-GRS to ZRS. However, you’re absolutely right that a two-step process is possible:

1. Manually update the replication from RA-GRS to LRS or GRS using the Azure portal, CLI, or PowerShell.
2. Once the account is on LRS or GRS, you may then submit a support request to initiate live migration to ZRS.

This approach is not considered a direct ZRS migration and may involve downtime or limitations depending on your workload and region. The correct answer remains tdaccount1, as it is the only account eligible for direct live migration without intermediate steps.

Feel free to let us know if you need any more help.

Regards,
JR @ Tutorials Dojo