---
title: "FsSessionStorageOptions"
source: "https://github.com/remix-run/remix/blob/8905f3943706e1f53696ab83e70a84873cabfc90/packages/session/src/lib/session-storage/fs.ts#L11"
---

# FsSessionStorageOptions

## Summary

Options for filesystem-backed session storage.

## Signature

```ts
interface FsSessionStorageOptions {
  useUnknownIds?: boolean
}

```

## Properties

### `useUnknownIds`

Whether to reuse session IDs sent from the client that are not found in storage.
Default is `false`.