# ClusterMembershipOptions.MaxDefunctSiloEntries

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clustermembershipoptions/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.core/orleans.configuration.clustermembershipoptions/properties/)

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

```csharp
public int? MaxDefunctSiloEntries
```

Gets or sets the maximum number of defunct silo entries to retain in the membership table. When this limit is exceeded, the first active silo, selected by natural [SiloAddress](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.siloaddress/) sort order, asynchronously removes the oldest excess defunct entries from the membership table. Set this value to `null` to retain all defunct entries and disable threshold-based cleanup.

### Value

Membership retains up to 25 defunct silo entries by default.