> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fly.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Fly Volumes

> Fly Volumes docs index: how NVMe volumes work, adding them to Fly Launch apps, managing them with flyctl, snapshots, states, and the Volumes API.

Fly Volumes are local persistent storage for [Fly Machines](https://docs.fly.io/machines). A Fly Volume is a slice of an NVMe drive on the same physical server as the Machine on which it's mounted.

* **[Fly Volumes overview](https://docs.fly.io/volumes/overview.md):** Learn how volumes work and whether they're right for your use case.

* **[Fly Launch apps - Add volume storage](https://docs.fly.io/launch/volume-storage.md):** Launch an app with volumes or add volume storage to an existing app.

* **[Create and manage volumes with flyctl](https://docs.fly.io/volumes/volume-manage.md):** Create, extend, copy, destroy, and restore volumes.

* **[Manage volume snapshots](https://docs.fly.io/volumes/snapshots.md):** We back up your data with volume snapshots. Create a volume snapshot on-demand, change the retention time for automatic snapshots, and restore data from a snapshot.

## Volume references

* [Volume states](https://docs.fly.io/volumes/volume-states.md)

* [flyctl commands - `fly volumes`](https://docs.fly.io/flyctl/cmd/fly_volumes)

* [Machines API - Volumes](https://docs.fly.io/machines/api/volumes-resource.md)