The EMR Serverless HBase deployment mode supports deployment across three AZs to ensure service availability in single AZ failure scenarios.
Introduction to Multi-AZ Deployment
In the multi-AZ deployment scenario, all three AZs can store data, with each piece of data stored in at least two AZs. Service will be unavailable if both the first and second AZs fail simultaneously.
Creating an Instance
When creating an instance, select the multi-AZ deployment mode. Ensure all node specifications are consistent, and choose AZs with adequate resources for the first and second AZs.
Expanding the Instance
After the instance is created, you can adjust the number of nodes in each of the three AZs as needed. To achieve data balancing, ensure each AZ has the same number of nodes.
