Correct Answer: B
Reason:-
Data redundancy is essential in the case of critical workloads. Azure Data Factory with default Azure managed Integration runtime environment has an option for automatic / Microsoft managed failover. So, if a disaster or any other thing is causing a region failure, Microsoft managed failover occurs in the paired region. Then you will be able to access the Azure Data Factory resources after that.
But in this case, the Integration runtime is SHIR. And it is using Azure VMs for its infrastructure.
In this case, the best option will be to configure Azure Site Recovery for Azure VMs and create automatic/ manual cutover to the failover region.
Option A is incorrect: This will not work for SHIR and only works when the runtime is Azure integrated runtime for the Azure Data Factory.
Option B is correct: Site recovery for Azure VM is the best option. When a region failure occurs, we can quickly do a failover to the next region.
Option C is incorrect: Azure will not replicate data of Azure VMs by default to paired regions or do an automatic failover. We have to set up an Azure Site Recovery service.
Option D is incorrect: Similar to option C, automatic failover is not an option for Azure VM, unless it is configured by Site Recovery. So, it is not the best answer.
