# Local Storage Capability

Prior to supporting local storage, every Chassy deployment to fleets would result in a new immutable deployment of code and data with no option to persist them beyond the lifespan of a deployment. With this new ability you can mark packages intended to be deployed in a release as persistent, and also write application data directly to the persistent directory `/persistent` for use later. This is ideal for storing large artifacts such as maps and personalized user configurations.

**Key Benefits:**

* Persistent storage of maps and models across deployments
* Reduced deployment time by eliminating redundant data uploads
* Improved operational continuity for production systems
* Enhanced data management capabilities for engineering teams

## Prerequisites and Compatibility

Any machines enrolled before August 1, 2025 must be re-enrolled to Chassy to enable local storage functionality. Follow the instructions on the [Enrolling Machines](/user-guides/fleet-user-guide/enrolling-machines.md)guide and run the enrollment script again to re-enroll your devices.

Fleets created after August 1, 2025 will have this feature automatically enabled.

To check if your fleet is compatible, go to the *Fleets* panel of Chassy Console, and click on your fleet. If the fleet was created before August 1, 2025, you'll see an option to *Enable* local storage in the fleet settings on the side panel.

<figure><img src="/files/LbAz96jfHFSl4nw0qQ5J" alt="A button to enable local storage is shown on the side panel of fleet details."><figcaption></figcaption></figure>

Confirm enabling Local Storage on the pop up modal. If successful, a notification will pop up saying "Fleet was successfully updated," and the option to *Enable* local storage in the fleet settings will disappear.

## How to Use Persistent Storage

To utilize this new feature, simply direct your code to save any files to the `/persistent` directory on the target device.

Chassy does not impose any limitations on file size or types, but be aware of your machines' remaining memory space.


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