# ProductionVariantCapacityReservationSummary
<a name="API_ProductionVariantCapacityReservationSummary"></a>

Details about an ML capacity reservation.

## Contents
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 ** AvailableInstanceCount **   <a name="sagemaker-Type-ProductionVariantCapacityReservationSummary-AvailableInstanceCount"></a>
The number of instances that are currently available in the ML capacity reservation.  
Type: Integer  
Valid Range: Minimum value of 0.  
Required: No

 ** CapacityReservationPreference **   <a name="sagemaker-Type-ProductionVariantCapacityReservationSummary-CapacityReservationPreference"></a>
The option that you chose for the capacity reservation. SageMaker AI supports the following options:    
capacity-reservations-only  
SageMaker AI launches instances only into an ML capacity reservation. If no capacity is available, the instances fail to launch.
Type: String  
Valid Values: `capacity-reservations-only`   
Required: No

 ** Ec2CapacityReservations **   <a name="sagemaker-Type-ProductionVariantCapacityReservationSummary-Ec2CapacityReservations"></a>
The EC2 capacity reservations that are shared to this ML capacity reservation, if any.  
Type: Array of [Ec2CapacityReservation](API_Ec2CapacityReservation.md) objects  
Required: No

 ** MlReservationArn **   <a name="sagemaker-Type-ProductionVariantCapacityReservationSummary-MlReservationArn"></a>
The Amazon Resource Name (ARN) that uniquely identifies the ML capacity reservation that SageMaker AI applies when it deploys the endpoint.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 258.  
Pattern: `arn:aws[a-z\-]*:sagemaker:[a-z0-9\-]*:[0-9]{12}:[a-z0-9\-]{1,14}/.*`   
Required: No

 ** TotalInstanceCount **   <a name="sagemaker-Type-ProductionVariantCapacityReservationSummary-TotalInstanceCount"></a>
The number of instances that you allocated to the ML capacity reservation.  
Type: Integer  
Valid Range: Minimum value of 0.  
Required: No

 ** UsedByCurrentEndpoint **   <a name="sagemaker-Type-ProductionVariantCapacityReservationSummary-UsedByCurrentEndpoint"></a>
The number of instances from the ML capacity reservation that are being used by the endpoint.  
Type: Integer  
Valid Range: Minimum value of 0.  
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/sagemaker-2017-07-24/ProductionVariantCapacityReservationSummary) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/sagemaker-2017-07-24/ProductionVariantCapacityReservationSummary) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/sagemaker-2017-07-24/ProductionVariantCapacityReservationSummary)