public String getVolumeKmsKeyId() {
        return this.volumeKmsKeyId;
    }
<p>
The Amazon Web Services Key Management Service (Amazon Web Services KMS) key that Amazon SageMaker uses to
encrypt data on the storage volume attached to the ML compute instance(s) that run the processing job.
</p>
<note>
<p>
Certain Nitro-based instances include local storage, dependent on the instance type. Local storage volumes are
encrypted using a hardware module on the instance. You can't request a <code>VolumeKmsKeyId</code> when using an
instance type with local storage.
</p>
<p>
For a list of instance types that support local instance storage, see <a
href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#instance-store-volumes">Instance
Store Volumes</a>.
</p>
<p>
For more information about local instance storage encryption, see <a
href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html">SSD Instance Store
Volumes</a>.
</p>
</note>

@return The Amazon Web Services Key Management Service (Amazon Web Services KMS) key that Amazon SageMaker uses
        to encrypt data on the storage volume attached to the ML compute instance(s) that run the processing job.
        </p> <note>
        <p>
        Certain Nitro-based instances include local storage, dependent on the instance type. Local storage
        volumes are encrypted using a hardware module on the instance. You can't request a
        <code>VolumeKmsKeyId</code> when using an instance type with local storage.
        </p>
        <p>
        For a list of instance types that support local instance storage, see <a
        href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#instance-store-volumes"
        >Instance Store Volumes</a>.
        </p>
        <p>
        For more information about local instance storage encryption, see <a
        href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html">SSD Instance Store
        Volumes</a>.
        </p>
aws-java-sdk-sagemaker/src/main/java/com/amazonaws/services/sagemaker/model/ProcessingClusterConfig.java