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pallab avatar image
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pallab asked deherman-MSFT answered

Few Queries on Azure Blob Storage Service Tier

I have some queries on Storage Access Tier

1) Can access tier be set at the blob level also apart from storage account level for a GPv2 Storage Account ? I am talking about hot and cool access tier only

2) I am using GZRS replication, so that means i cannot leverage Archive Tier, is that correct?

3) Once a data is not accessed for 30 days say and if i have a policy say that after 30 days move the data to cool tier, what happens when i access that data again after 30 days, does it go to Hot tier and does the cycle start all over again?

4) If access tier is set at the Storage Account Level say for a GPv2 Storage Account and then access tier is set at the Blob level, which one will win in this case?

5) In case of a DR Failover scenario say if i failover a Storage Account and it's blobs from a Primary to a Secondary Region, will the tier get failed over also to the Secondary Region ? e.g Storage Account in Primary Region has Cool Tier, will it be cool tier also when i failover this SA say to the Secondary Region or the Tier will change from Cool--> Hot in the new Primary once the failover happens?

azure-storage-accountsazure-blob-storage
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1 Answer

deherman-MSFT avatar image
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deherman-MSFT answered

Thanks for your questions. I am answering your questions in-line below:

1) Yes, you can upload or change the blob-level tier to be different from the account tier.

2) Yes, archive tier is not supported for GZRS accounts.

3) Either is an option. enableAutoTierToHotFromCool property is a Boolean value that indicates if a blob should automatically be tiered from cool back to hot if it is accessed again after being tiered to cool. I recommend reading through this section here for more details.

4) If you explicitly set the access tier at the blob-level that will over ride the account tier setting. On blob upload, you can specify the access tier of your choice to be hot, cool, or archive regardless of the default account tier.

5) The tier will be the same in both the primary and secondary region. The tier will not change.

Hope this answers all your questions. Let me know if you have further question and we will be happy to assist.



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