# TestClusterBuilder Constructors

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/)

## TestClusterBuilder {#constructor-b43f0613}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/constructors/constructor-b43f0613/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.TestingHost/TestClusterBuilder.cs#L27-L29)

```csharp
public TestClusterBuilder()
```

Initializes a new instance of [TestClusterBuilder](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/) using the default options.

## TestClusterBuilder(short) {#constructor-short-7eafe9f2}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/constructors/constructor-short-7eafe9f2/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.TestingHost/TestClusterBuilder.cs#L19-L61)

```csharp
public TestClusterBuilder(short initialSilosCount)
```

Initializes a new instance of [TestClusterBuilder](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/) overriding the initial silos count.

### Parameters

- `initialSilosCount` (`short`): The number of initial silos to deploy.