Microsoftis that configuration only going to use the Primary and Secondary site and its storage, or do we need additional Storage account for this.
MicrosoftYou will need an Azure storage account. See this article for details on how to create one https://learn.microsoft.com/en-us/azure/site-recovery/tutorial-prepare-azure-for-hyperv#create-a-storage-account
You do not need to follow the other steps in the article, as they apply to manual Hyper-V-to-Azure configuration. For Azure Local, we have made this process much simpler. The Azure storage account is still a prerequisite, so that's why you only need to follow the Storage account section.
For Azure Local specific configuration, follow this article
https://learn.microsoft.com/en-us/azure/azure-local/manage/azure-site-recovery
