Generally available: Zone Redundant Storage for Azure Disks is now available in more regions.

Zone Redundant Storage (ZRS) for Azure Disk Storage is now generally available on Azure Premium SSDs and Standard SSDs in Brazil South, UK South, East US, East US 2, and South-Central US regions. Disks with ZRS provide synchronous replication of data across three availability zones in a region, enabling disks to tolerate zonal failures without causing disruptions to your application. This feature enables disks to tolerate zonal failures without causing disruptions to your application. Additionally, it allows you to maximize virtual machine availability without the need for application-level replication of data across zones.  You can also use ZRS with shared disks to provide higher availability for clustered or distributed applications like SQL FCI, SAP ASCS/SCS, or GFS2.

To learn more, read the documentation.