Storage replication types

Data that is stored in Azure is always replicated to ensure durability and high availability. This way, it is protected from unplanned and planned events, such as network or power outages, natural disasters, and terrorism. It also ensures that, during these types of events, your storage account still meets the SLA. Data can be replicated within the same data center, across zonal data centers within the same region, and across different regions. These replication types are named locally redundant storage (LRS), zone redundant storage (ZRS), geo-redundant storage (GRS), and read-access geo-redundant storage (RA-GRS), and they will be covered in more detail in the upcoming sections.