Using Existing Databases - Ambari
Before using Ambari with an existing database, other than the embedded PostgreSQL database instance that Ambari Server uses by default, perform the instructions in one of these database-specific topics:
![[Important]](../common/images/admon/important.png) | Important |
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Using the Microsoft SQL Server or SQL Anywhere database options are not supported. |
| Important |
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For High Availability (HA) purposes, it is required that the relational database used with Ambari is also made highly available following best practices for the given database type. |