# Configuring a DB instance

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/amazon-rds-user-guide.git)
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## Creating a DB instance

* **Important**\
  Before you can create an Amazon RDS DB instance, you must complete the tasks in [Setting up for Amazon RDS](https://github.com/kevinslin/aws-reference-notes/blob/main/services/amazon_rds/CHAP_SettingUp.md).
* **Note**\
  In the following procedure, **Standard create** is enabled, and **Easy create** isn't enabled. This procedure uses Microsoft SQL Server as an example.\
  For examples that use **Easy create** to walk you through creating and connecting to sample DB instances for each engine, see [Getting started with Amazon RDS](https://github.com/kevinslin/aws-reference-notes/blob/main/services/amazon_rds/CHAP_GettingStarted.md).

## Working with option groups

* **Note**\
  Currently, you can't copy an option group to a different AWS Region.
* **Note**\
  If you specify a security group as a value for an option in an option group, manage the security group by modifying the option group. You can't change or remove this security group by modifying a DB instance. Also, the security group doesn't appear in the DB instance details in the AWS Management Console or in the output for the AWS CLI command `describe-db-instances`.
* **Note**\
  If you specify a security group as a value for an option in an option group, you manage the security group by modifying the option group. You can't change or remove this security group by modifying a DB instance. Also, the security group doesn't appear in the DB instance details in the AWS Management Console or in the output for the AWS CLI command `describe-db-instances`.
* **Note**\
  You can't modify the option group of an automated DB snapshot.

## Working with parameter groups

* **Note**\
  Some DB engines offer additional features that you can add to your database as options in an option group. For information about option groups, see [Working with option groups](https://github.com/kevinslin/aws-reference-notes/blob/main/services/amazon_rds/USER_WorkingWithOptionGroups.md).