# PlacementStrategy Properties

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.placementstrategy/)

## IsUsingGrainDirectory {#isusinggraindirectory-16e2352f}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.placementstrategy/properties/isusinggraindirectory-16e2352f/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Placement/PlacementStrategy.cs#L23)

```csharp
public virtual bool IsUsingGrainDirectory
```

Gets a value indicating whether or not this placement strategy requires activations to be registered in the grain directory.