Protecting Virtual Machines From Azure : Replication From a Protected Site Microsoft Azure to a Recovery Site Microsoft Azure
  
Replication From a Protected Site Microsoft Azure to a Recovery Site Microsoft Azure
You can protect Azure virtual machines by replicating within Azure. The paired ZCA sites can share regions and storage accounts.
BEST PRACTICE: It is recommended to use a separate storage account per ZCA. Although Azure ZCAs can use the same storage account for protecting VMs, the system does not recognize if the two ZCAs are protecting the same VM, even if they’re not paired to each other.
See also:
■ Requirements for Microsoft Azure Environments
■ VPGs Recovering to Azure Standard Storage and Premium Managed Disks
■ Converting Premium Virtual Machines for Protection
■ Protecting From a Microsoft Azure Site - To a Microsoft Azure Recovery Site