Why are access tier options greyed out for Azure Data Lake Gen 2 storage?

Question

When attempting to change the access tier of a file stored in Azure Data Lake Gen 2, all the access tier options are greyed out. What could be causing this issue and what are the possible solutions?

Answer 1

Hello Samuel Kwesiga Kisitu,

Welcome to the Microsoft Q&A and thank you for posting your questions here.

I understand that you're experiencing access tier options being greyed out in Azure Data Lake Gen 2 storage.

This can be caused by several factors such as Blob type, Account type, Permission and Data Lake Storage. You can read more from these links: https://github.com/microsoft/AzureStorageExplorer/issues/171 and https://learn.microsoft.com/en-us/azure/storage/blobs/data-lake-storage-access-control-model

Though, you mentioned your account type is Azure Data Lake Gen 2, check other areas and to resolve this issue, you can:

• Verify the blob type and ensure it is a block blob.
• Confirm you have the required permissions to change access tiers.
• Review the specific limitations and capabilities of Data Lake Storage Gen2. For example, if the file is stored in a hierarchical namespace (Data Lake Storage Gen2), access tiering might not be supported for certain operations.

I hope this is helpful! Do not hesitate to let me know if you have any other questions.

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Answer 2

Hi @Samuel Kwesiga Kisitu

Greetings! Welcome to Microsoft Q&A Forum. Thanks for posting your query!

Firstly, apologies for delay in response.

In addition, to the above solution provided by Sina Salam. I would also suggest you try the below suggestions.

1. Please check the blob type, see if you are trying to change the access tires on the Block blobs, because access tires can be changed on Block blobs, and it will be greyed out for Append blobs.
2. Also, check account level settings, hot and cool access tiers can be set at the account level, but the access archive access tier is not set supported at this level. If your account is not configured to support these tiers, the options may appear greyed out.
3. Check if there are any Lifecycle Management policies in place that dictate how data should be stored, because these polices may restrict changes to access tiers.
4. Also, please make sure that you have necessary permissions to change the access tiers. Sometime even due to lack of appropriate permissions can also prevent from making changes. You may need Owner or Contributor roles to make changes.
5. Check if there are any resource locks applied to the storage account that prevent modifications.
6. Please make sure the hierarchical namespace feature is enabled only if needed for ADLS gen2, it might also interfere with access tier functionality.

Please refer any additional information:

• Key considerations for Azure Data Lake Storage
• Access tiers for blob data

Hope this answer helps! Please let us know if you have any further queries. I’m happy to assist you further.

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