Stored Data Replication
Azure replicates stored data for durability and high availability. When you deploy Teradata Database on Azure VMs using premium storage, data is automatically replicated locally three times for redundancy. For more information, see the Azure Documentation Center and search for High-Performance Premium Storage and Azure VM Disks and Data replication in Azure Storage.
Beyond what is replicated locally, it is important that you still back up your data to data centers in other regions for disaster recovery and other scenarios.