To back up Plex, save the Plex Media Server data directory for its settings, library metadata, and other server state—and back up your movie, TV, and music files separately if you need those recoverable too. For a manual copy, stop Plex first and save the copy somewhere outside its live data directory. On a NAS, snapshots can speed up local recovery, but versioned backups and an offsite copy protect against different kinds of loss.
What a Plex backup needs to contain
A Plex setup has two distinct backup targets: the server’s application data and the media files it organizes. A copy of one does not automatically protect the other.
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Plex Media Server data
The core application backup is the Plex Media Server data directory. It contains Plex-specific state such as settings and metadata. Its location depends on the operating system and, on a NAS, how Plex was installed. Use Plex’s backup instructions to identify the correct directory for your installation rather than assuming a default path.
Settings stored separately on some platforms
Plex identifies additional settings outside the main data directory on Windows and macOS: the Windows registry branch HKEY_CURRENT_USERSoftwarePlex, Inc.Plex Media Server and the macOS file ~/Library/Preferences/com.plexapp.plexmediaserver.plist. On Linux and NAS devices, Plex says preferences.xml is in the main Plex Media Server directory.
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Media files
Your movie, television, and music files are separate from Plex’s server data. Back them up independently if you want to recover the actual media, not just Plex’s catalog and settings. Plex’s migration instructions also treat media folder locations as a separate concern when moving a server.
Cache and archive location
Plex says Windows and Linux users may omit the Cache directory to save space and transfer time. Check Plex’s platform-specific instructions before applying that exception elsewhere. Do not save a zip or tar archive of Plex data inside the active Plex data directory: Plex warns that it may treat unfamiliar files there as unused and clear them. Store the archive in a separate location.
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How to make and restore a manual backup
- Find the actual data directory. Check Plex’s data backup instructions for your operating system and account for your NAS package or container setup.
- Stop Plex Media Server. For a manual copy or migration, quit or stop the source server first, as Plex instructs in its migration guide.
- Copy the data directory elsewhere. Keep the destination separate from the live Plex data directory. Plex notes that creating a zip or tar archive can make transfers faster when a library contains many small files.
- Protect separate settings and media as needed. Include the Windows registry branch or macOS plist if applicable, and use a separate backup job or destination for media files you need to recover.
- Restore to the expected location. Reinstall Plex Media Server if needed, restore the data and any separate platform settings, and on Linux or NAS systems ensure restored files are owned by the account running Plex. Plex gives
plex:plexas an example. - Check the restored library. When moving systems, update library folder locations, scan and verify that Plex has associated the media correctly, and only then remove old paths, following Plex’s migration guidance.
Test a restore periodically. Plex’s instructions describe restoration but do not set a universal test schedule or recovery-time target; choose a cadence based on how much recent server state you can afford to lose.
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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteSnapshots, versioned backups, and cloud copies are different
| Method | What it is useful for | What to check |
|---|---|---|
| NAS snapshot | A point-in-time copy that can support quick recovery from accidental changes or deletion. | Support depends on the NAS, filesystem, and configuration. Synology’s Snapshot Replication is Btrfs-based and supports scheduled snapshots, replication to compatible Synology systems, and rapid restore; those capabilities are not universal to all NAS devices. Synology Snapshot Replication |
| Versioned backup | Retains multiple versions so you can return to an earlier copy rather than only the latest state. | Check the current DSM version, destination, retention settings, and restore tools. Synology’s Hyper Backup documentation describes backups to local or remote Synology NAS devices and public cloud destinations. Synology Hyper Backup |
| Cloud sync | Uploads or synchronizes files to a cloud service. | Sync is not automatically versioned backup. Synology says Cloud Sync defaults to retaining the current version of NAS files; multiple versions depend on support from the cloud provider. Synology backup guidance |
| Offsite copy | Provides another recovery option if the source NAS or its location is lost. | Use a destination physically separate from the source. RAID and disk redundancy do not eliminate the risk of losing data, and a remote NAS or cloud copy can protect against some events affecting the source site. Synology backup guidance |
These approaches can complement one another. A local snapshot may make an accidental change easier to undo, while a versioned backup preserves earlier states and an offsite copy addresses loss of the source location. Synology describes its Snapshot Replication as using Btrfs to create point-in-time copies that can be replicated to other Synology systems and rapidly restored after data loss or accidental modification; that description applies to its supported setup, not every NAS or Plex installation.
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- 256-bit AES hardware encryption
- SuperSpeed USB (5 Gbps); USB 2.0 compatible
Build a backup plan around the loss you need to recover from
- Accidental deletion or a bad change: Look for snapshots or backups with history, and confirm how long prior versions are retained.
- NAS hardware failure: Keep a backup on a separate device or destination; a snapshot stored only on the affected NAS may not be enough.
- Loss of the NAS or its location: Keep a copy offsite, such as a remote destination or cloud backup.
- Loss of Plex configuration or metadata: Back up the Plex data directory and any applicable Windows or macOS settings.
- Loss of the media library: Ensure the media files themselves are included in a separate backup plan.
Synology presents the 3-2-1 approach as a recommendation: three copies, on two storage devices or media, with one copy offsite. Treat it as a planning guideline, not a guarantee against data loss. When comparing options, consider what each covers, how many versions it keeps, whether the destination is offsite, compatibility, access controls, capacity and transfer limits, and how complicated restoration will be. The available vendor documentation does not establish a universal price, capacity requirement, or restore-time comparison.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.NAS-specific checks before relying on snapshots
Do not assume a snapshot is a complete Plex backup or that it captures every installation consistently. Synology’s Snapshot Replication requires supported equipment and Btrfs, and its feature documentation does not establish application-consistent snapshots for every Plex setup. The Plex guidance explicitly says to stop the server before a manual data copy; verify the behavior and restore process for your NAS configuration instead of assuming a live snapshot is equivalent.
Quick Recap
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- Slim durable design to help take your important files with you
- Vast capacities up to 6TB[1] to store your photos, videos, music, important documents and more
- Back up smarter with included device management software[2] with defense against ransomware
- Help secure your important files with password protection and hardware encryption
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- Slim durable design to help take your important files with you
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- Help secure your important files with password protection and hardware encryption
- Confirm the Plex data directory for the NAS package or container you use.
- Check that the filesystem and NAS model support the snapshot or replication feature you plan to use.
- Review version retention, destination, and access controls for backup jobs.
- Test restoring Plex data, platform settings, and media paths before depending on the plan.
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