# InProcessTestCluster.StartSilosAsync(int, CancellationToken)

[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/1644940b035c7bdf215a4fd7135757c06bcfe9ec/src/Orleans.TestingHost/InProcTestCluster.cs#L560)

```csharp
public Task<List<InProcessSiloHandle>> StartSilosAsync(int silosToStart, CancellationToken cancellationToken)
```

Start a number of additional silos, so that they join the existing cluster.

### Parameters

- `silosToStart` (`int`): Number of silos to start.
- `cancellationToken` (`CancellationToken`): The token used to cancel silo startup.

### Returns

List of silo handles for the newly started silos.