@Rishabh Jaiswal Firstly, Apologies for the delay response!
Why there is no provision to replicate data on the secondary regions using ZRS? Due to the charges, supported regions and more. (ZRS is expensive than LRS, If disaster happens, and they failover, You will be down to one copy at destination. Now, you can request an LRS to ZRS migration )
However, After failing over, We can request migration from LRS to ZRS through support. Depending on the use case, for block blobs, they can setup object replication between two ZRS accounts. We need to more information of the case/scenario. I would recommend you contact support, so If you have a support plan, I request you file a support ticket, else please do let us know, we will try and help you out with different options!
For detailed information's, please refer to Azure Storage redundancy article.
Please let us know if you have any further queries. I’m happy to assist you further.
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