Hello @Krishna Kumar Reddy Nandyala ,
Welcome to the Microsoft Q&A platform.
This feature (Account failover process) is not yet supported in accounts that have a hierarchical namespace (Azure Data Lake Storage Gen2).
Failover for storage accounts with hierarchical namespace enabled (Azure Data Lake Storage Gen2 storage accounts) is not supported at this time.
This feature is only available for Azure Storage account.
For more details, refer to Disaster recovery and storage account failover.
I would suggest you to vote up an idea submitted by another Azure customer.
https://feedback.azure.com/forums/217298-storage/suggestions/42037618-account-failover-for-adls-gen2
All of the feedback you share in these forums will be monitored and reviewed by the Microsoft engineering teams responsible for building Azure.
Hope this helps. Do let us know if you any further queries.
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