# S3FileSystem
<a name="API_S3FileSystem"></a>

A custom file system in Amazon S3. This is only supported in Amazon SageMaker Unified Studio.

## Contents
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 ** S3Uri **   <a name="sagemaker-Type-S3FileSystem-S3Uri"></a>
The Amazon S3 URI that specifies the location in S3 where files are stored, which is mounted within the Studio environment. For example: `s3://<bucket-name>/<prefix>/`.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 1024.  
Pattern: `(s3)://([^/]+)/?(.*)`   
Required: Yes

## 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/sagemaker-2017-07-24/S3FileSystem) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/sagemaker-2017-07-24/S3FileSystem) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/sagemaker-2017-07-24/S3FileSystem)