# EbsConfiguration
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The Amazon EBS configuration of a cluster instance.

## Contents
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 ** EbsBlockDeviceConfigs **   <a name="EMR-Type-EbsConfiguration-EbsBlockDeviceConfigs"></a>
An array of Amazon EBS volume specifications attached to a cluster instance.  
Type: Array of [EbsBlockDeviceConfig](API_EbsBlockDeviceConfig.md) objects  
Required: No

 ** EbsOptimized **   <a name="EMR-Type-EbsConfiguration-EbsOptimized"></a>
Indicates whether an Amazon EBS volume is EBS-optimized. The default is false. You should explicitly set this value to true to enable the Amazon EBS-optimized setting for an EC2 instance.  
Type: Boolean  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/elasticmapreduce-2009-03-31/EbsConfiguration) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticmapreduce-2009-03-31/EbsConfiguration) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/elasticmapreduce-2009-03-31/EbsConfiguration)