• Relational Database Service

  1. Help Center
  2. Relational Database Service
  3. User Guide
  4. Introduction
  5. DB Instance Description
  6. DB Instance Type

DB Instance Type

DB instances are the smallest management units used by RDS. Each is an isolated database environment on the cloud and can be classified as one of the following:

  • Primary DB instance
  • Standby DB instance
  • Read replica

RDS for Microsoft SQL Server does not support read replicas.

You can use RDS to create and manage DB instances running various DB engines.