AWS SDK Version 3 for .NET
API Reference

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Container for the parameters to the StartInstances operation. Starts an Amazon EBS-backed instance that you've previously stopped.

Instances that use Amazon EBS volumes as their root devices can be quickly stopped and started. When an instance is stopped, the compute resources are released and you are not billed for instance usage. However, your root partition Amazon EBS volume remains and continues to persist your data, and you are charged for Amazon EBS volume usage. You can restart your instance at any time. Every time you start your instance, Amazon EC2 charges a one-minute minimum for instance usage, and thereafter charges per second for instance usage.

Before stopping an instance, make sure it is in a state from which it can be restarted. Stopping an instance does not preserve data stored in RAM.

Performing this operation on an instance that uses an instance store as its root device returns an error.

If you attempt to start a T3 instance with host tenancy and the unlimited CPU credit option, the request fails. The unlimited CPU credit option is not supported on Dedicated Hosts. Before you start the instance, either change its CPU credit option to standard, or change its tenancy to default or dedicated.

For more information, see Stop and start your instance in the Amazon EC2 User Guide.

Inheritance Hierarchy


Namespace: Amazon.EC2.Model
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public class StartInstancesRequest : AmazonEC2Request

The StartInstancesRequest type exposes the following members


Public Method StartInstancesRequest()

Empty constructor used to set properties independently even when a simple constructor is available

Public Method StartInstancesRequest(List<String>)

Instantiates StartInstancesRequest with the parameterized properties


Public Property AdditionalInfo System.String

Gets and sets the property AdditionalInfo.


Public Property InstanceIds System.Collections.Generic.List<System.String>

Gets and sets the property InstanceIds.

The IDs of the instances.


This example starts the specified EC2 instance.

To start a stopped EC2 instance

var client = new AmazonEC2Client();
var response = client.StartInstances(new StartInstancesRequest 
    InstanceIds = new List<string> {

List<InstanceStateChange> startingInstances = response.StartingInstances;


Version Information

Supported in: 8.0 and newer, Core 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5 and newer, 3.5