# ClusterOptions Properties

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/)

## ClusterId {#clusterid-a2727ffe}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/properties/clusterid-a2727ffe/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core/Configuration/Options/ClusterOptions.cs)

```csharp
public string ClusterId
```

Gets or sets the cluster identity. This used to be called DeploymentId before Orleans 2.0 name.

## ServiceId {#serviceid-f94bf623}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/properties/serviceid-f94bf623/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core/Configuration/Options/ClusterOptions.cs)

```csharp
public string ServiceId
```

Gets or sets a unique identifier for this service, which should survive deployment and redeployment, where as [ClusterOptions](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clusteroptions/) might not.