Advantages of Multi-AZ deployments
Understand the single and multiple AWS availability zones that Cloudera Operational Database (COD) supports along with the advantages of deploying Multi-AZ.
COD in a single AWS availability zone
Without multiple availability zone based deployments, CDP Control Plane deploys COD and Data Hubs into a single subnet, meaning that each of them has VMs spread across a single availability zone (as on AWS every subnet is related to a single availability zone).
COD in a multiple AWS availability zone
If you choose to deploy your COD Environment and Data Hubs across multiple subnets and availability zones (multi-AZ), each of these components could be spread across two or more availability zones, providing high availability, resilience, and fault tolerance.
| Advantages | Descriptions |
|---|---|
| High availability | Supports high availability for your application with automatic database failover. It ensures that you do not lose any data and zero manual intervention. |
| Resilience | Ensures that the data on your standby database instance is up-to-date with the primary. |
| Fault tolerance | Enhances availability by deploying a standby instance in a second AZ, and achieve fault tolerance in the event of an AZ or database instance failure. |
