# InProcessTestCluster.StartSiloAsync(InProcessTestCluster, int, InProcessTestClusterOptions)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.inprocesstestcluster/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.inprocesstestcluster/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.TestingHost/InProcTestCluster.cs)

```csharp
public static Task<InProcessSiloHandle> StartSiloAsync(InProcessTestCluster cluster, int instanceNumber, InProcessTestClusterOptions clusterOptions)
```

Start a new silo in the target cluster

### Parameters

- `cluster` (`InProcessTestCluster`): The InProcessTestCluster in which the silo should be deployed
- `instanceNumber` (`int`): The instance number to deploy
- `clusterOptions` (`InProcessTestClusterOptions`): The options to use.

### Returns

A handle to the silo deployed