# Determining DB instance class support in AWS Regions
<a name="Concepts.DBInstanceClass.RegionSupportAurora"></a>

To determine the DB instance classes supported by each DB engine in a specific AWS Region, you can take one of several approaches. You can use the AWS Management Console, the [Amazon RDS Pricing](https://aws.amazon.com/rds/pricing/) page, or the [describe-orderable-db-instance-options](https://docs.aws.amazon.com/cli/latest/reference/rds/describe-orderable-db-instance-options.html) AWS CLI command.

**Note**  
When you perform operations with the AWS Management Console, it automatically shows the supported DB instance classes for a specific DB engine, DB engine version, and AWS Region. Examples of the operations that you can perform include creating and modifying a DB instance.

**Contents**
+ [Using the Amazon RDS pricing page to determine DB instance class support in AWS Regions](#Concepts.DBInstanceClass.RegionSupportAurora.PricingPage)
+ [Using the AWS CLI to determine DB instance class support in AWS Regions](#Concepts.DBInstanceClass.RegionSupportAurora.CLI)
  + [Listing the DB instance classes that are supported by a specific DB engine version in an AWS Region](#Concepts.DBInstanceClass.RegionSupportAurora.CLI.Example1)
  + [Listing the DB engine versions that support a specific DB instance class in an AWS Region](#Concepts.DBInstanceClass.RegionSupportAurora.CLI.Example2)

## Using the Amazon RDS pricing page to determine DB instance class support in AWS Regions
<a name="Concepts.DBInstanceClass.RegionSupportAurora.PricingPage"></a>

You can use the [Amazon Aurora Pricing](https://aws.amazon.com/rds/pricing/) page to determine the DB instance classes supported by each DB engine in a specific AWS Region. 

**To use the pricing page to determine the DB instance classes supported by each engine in a Region**

1. Go to [Amazon Aurora Pricing](https://aws.amazon.com/rds/aurora/pricing/).

1. Choose an Amazon Aurora engine in the **AWS Pricing Calculator** section.

1. In **Choose a Region**, choose an AWS Region.

1. In **Cluster Configuration Option**, choose a configuration option.

1. Use the section for compatible instances to view the supported DB instance classes.

1. (Optional) Choose other options in the calculator, and then choose **Save and view summary** or **Save and add service**.

## Using the AWS CLI to determine DB instance class support in AWS Regions
<a name="Concepts.DBInstanceClass.RegionSupportAurora.CLI"></a>

You can use the AWS CLI to determine which DB instance classes are supported for specific DB engines and DB engine versions in an AWS Region.

To use the AWS CLI examples following, enter valid values for the DB engine, DB engine version, DB instance class, and AWS Region. The following table shows the valid DB engine values.


****  

| Engine name | Engine value in CLI commands | More information about versions | 
| --- | --- | --- | 
|  MySQL 5.7-compatible and 8.0-compatible Aurora  |  `aurora-mysql`  |  [ Database engine updates for Amazon Aurora MySQL version 2](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraMySQLReleaseNotes/AuroraMySQL.Updates.20Updates.html) and [ Database engine updates for Amazon Aurora MySQL version 3](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraMySQLReleaseNotes/AuroraMySQL.Updates.30Updates.html) in the *Release Notes for Aurora MySQL*  | 
|  Aurora PostgreSQL  |  `aurora-postgresql`  |  [https://docs.aws.amazon.com/AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/Welcome.html](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/Welcome.html)  | 

For information about AWS Region names, see [AWS RegionsAvailability Zones](Concepts.RegionsAndAvailabilityZones.md#Concepts.RegionsAndAvailabilityZones.Regions).

The following examples demonstrate how to determine DB instance class support in an AWS Region using the [describe-orderable-db-instance-options](https://docs.aws.amazon.com/cli/latest/reference/rds/describe-orderable-db-instance-options.html) AWS CLI command.

**Topics**
+ [Listing the DB instance classes that are supported by a specific DB engine version in an AWS Region](#Concepts.DBInstanceClass.RegionSupportAurora.CLI.Example1)
+ [Listing the DB engine versions that support a specific DB instance class in an AWS Region](#Concepts.DBInstanceClass.RegionSupportAurora.CLI.Example2)

### Listing the DB instance classes that are supported by a specific DB engine version in an AWS Region
<a name="Concepts.DBInstanceClass.RegionSupportAurora.CLI.Example1"></a>

To list the DB instance classes that are supported by a specific DB engine version in an AWS Region, run the following command.

For Linux, macOS, or Unix:

```
aws rds describe-orderable-db-instance-options --engine engine --engine-version version \
    --query "OrderableDBInstanceOptions[].{DBInstanceClass:DBInstanceClass,SupportedEngineModes:SupportedEngineModes[0]}" \
    --output table \
    --region region
```

For Windows:

```
aws rds describe-orderable-db-instance-options --engine engine --engine-version version ^
    --query "OrderableDBInstanceOptions[].{DBInstanceClass:DBInstanceClass,SupportedEngineModes:SupportedEngineModes[0]}" ^
    --output table ^
    --region region
```

The output also shows the engine modes that are supported for each DB instance class.

For example, the following command lists the supported DB instance classes for version 13.6 of the Aurora PostgreSQL DB engine in US East (N. Virginia).

For Linux, macOS, or Unix:

```
aws rds describe-orderable-db-instance-options --engine aurora-postgresql --engine-version 15.3 \
    --query "OrderableDBInstanceOptions[].{DBInstanceClass:DBInstanceClass,SupportedEngineModes:SupportedEngineModes[0]}" \
    --output table \
    --region us-east-1
```

For Windows:

```
aws rds describe-orderable-db-instance-options --engine aurora-postgresql --engine-version 15.3 ^
    --query "OrderableDBInstanceOptions[].{DBInstanceClass:DBInstanceClass,SupportedEngineModes:SupportedEngineModes[0]}"  ^
    --output table ^
    --region us-east-1
```

### Listing the DB engine versions that support a specific DB instance class in an AWS Region
<a name="Concepts.DBInstanceClass.RegionSupportAurora.CLI.Example2"></a>

To list the DB engine versions that support a specific DB instance class in an AWS Region, run the following command.

For Linux, macOS, or Unix:

```
aws rds describe-orderable-db-instance-options --engine engine --db-instance-class DB_instance_class \
    --query "OrderableDBInstanceOptions[].{EngineVersion:EngineVersion,SupportedEngineModes:SupportedEngineModes[0]}" \
    --output table \
    --region region
```

For Windows:

```
aws rds describe-orderable-db-instance-options --engine engine --db-instance-class DB_instance_class ^
    --query "OrderableDBInstanceOptions[].{EngineVersion:EngineVersion,SupportedEngineModes:SupportedEngineModes[0]}" ^
    --output table ^
    --region region
```

The output also shows the engine modes that are supported for each DB engine version.

For example, the following command lists the DB engine versions of the Aurora PostgreSQL DB engine that support the db.r5.large DB instance class in US East (N. Virginia).

For Linux, macOS, or Unix:

```
aws rds describe-orderable-db-instance-options --engine aurora-postgresql --db-instance-class db.r7g.large \
    --query "OrderableDBInstanceOptions[].{EngineVersion:EngineVersion,SupportedEngineModes:SupportedEngineModes[0]}" \
    --output table \
    --region us-east-1
```

For Windows:

```
aws rds describe-orderable-db-instance-options --engine aurora-postgresql --db-instance-class db.r7g.large ^
    --query "OrderableDBInstanceOptions[].{EngineVersion:EngineVersion,SupportedEngineModes:SupportedEngineModes[0]}" ^
    --output table ^
    --region us-east-1
```