About synchronous disk replication
This feature is subject to the "Pre-GA Offerings Terms" in the General Service Terms section of the Service Specific Terms. Pre-GA features are available "as is" and might have limited support. For more information, see the launch stage descriptions.
Regional Persistent Disk and Hyperdisk Balanced High Availability volumes are designed for workloads that require a lower Recovery Point Objective (RPO) and Recovery Time Objective (RTO). To learn more about RPO and RTO, see Basics of disaster recovery planning.
This document provides an overview of how to build HA services with Regional Persistent Disk and Hyperdisk Balanced High Availability volumes.
When you decide to use Regional Persistent Disk or Hyperdisk Balanced High Availability, make sure that you compare the different options for increasing service availability and the cost, performance, and resiliency for different service architectures.
A Regional Persistent Disk or Hyperdisk Balanced High Availability (Preview) volume, also referred to as a replicated disk, has a primary and a secondary zone within its region where it stores disk data:
