# LogConsistencyProvider.PrimaryCluster

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.eventsourcing/orleans.eventsourcing.customstorage.logconsistencyprovider/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.eventsourcing/orleans.eventsourcing.customstorage.logconsistencyprovider/properties/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.EventSourcing/CustomStorage/LogConsistencyProvider.cs#L25)

```csharp
public string? PrimaryCluster
```

Specifies a cluster id of the primary cluster from which to access storage exclusively, null if storage should be accessed directly from all clusters.