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Hosting Syncthing

Syncthing keeps folders in sync between devices you approve. It is useful for moving a working folder between a desktop, laptop and an always-on server without making that server a web-based file portal. You choose the devices and folders that participate in each share.

Requirements last checked against the project's documentation.

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Understand the setup

Find the software and services needed to run the application.

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Budget your resources

Plan memory, storage and CPU for the way you will use it.

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Must have

Installation requirements

  • A supported Syncthing build on each participating device.
  • Writable storage for synchronized folders and application configuration.
  • Network access between peers, directly or through the configured discovery and relay mechanisms.

Recommended

Planning guidance

Use the resource planner to size a server for your workload.

Choosing a server for Syncthing

File count, change frequency and scan activity affect resource use. A large collection of small files can behave differently from a few archives of the same total size.

Deploy with

Supported paths

  • Platform package
  • Release binary
  • Operating-system service

The host must provide

Runtime

Peers
Each participating device runs Syncthing and explicitly accepts the device and folder relationship.

Storage

Persistent data

Each device needs room for the folders it receives. Optional file versioning also consumes space. Preserve configuration and device identity when replacing a host, and maintain a backup outside the synchronized folder.

Step by step

Plan a Syncthing deployment

  1. Pair devices

    Verify device identities and accept the connection on the intended peers.

    Official instructions
  2. Share a folder

    Choose its path and sharing devices, then check that files arrive in the intended location.

    Official instructions
  3. Choose versioning deliberately

    Enable an appropriate per-folder versioning policy where needed and allow disk space for retained copies.

    Official instructions

Security

Before you go public

  • Protect the administration interface and do not expose it publicly without appropriate access controls.
  • Share folders only with trusted devices; removing or changing a file can propagate through a synchronized share.

Cost

Beyond the server price

  • An always-on peer needs its own server or device budget.
  • Synchronization and retained file versions consume transfer and storage; a relay does not provide a permanent hosted copy.

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