The information for disaster recovery and account failover can be found here. Microsoft strives to ensure that Azure services are always available. However, unplanned service outages may occur. If your application requires resiliency, Microsoft recommends using geo-redundant storage, so that your data is copied to a second region. Additionally, customers should have a disaster recovery plan in place for handling a regional service outage. An important part of a disaster recovery plan is preparing to fail over to the secondary endpoint in the event that the primary endpoint becomes unavailable.
If your storage account is configured for read access to the secondary, then you can design your application to read from the secondary endpoint. If you prefer not to fail over in the event of an outage in the primary region, you can use tools such as AzCopy, Azure PowerShell, or the Azure Data Movement library to copy data from your storage account in the secondary region to another storage account in an unaffected region. You can then point your applications to that storage account for both read and write availability.
Hope this helps. Let me know if you still had questions and I will do my best to assist.
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