Upgrading Synology NAS hardware and migrating Plex content

Hi folks –

I’m upgrading our aging Synology DS1812+ to a new Synology DS1821+, and would like to move our Plex set up to the new system to preserve playlists and other configuration. The older NAS is running DSM 6 (latest version it can support) and the new NAS is running DSM 7. Does anyone know if the Plex migration docs cover the scenario of both moving from one Synology to another as well as the underlying DSM version upgrade? If not, are there any recipes/guidelines on how best to approach this?

Thanks!

The migration docs do not fully cover migrating DSM because that’s a rare combination.

You’re effectively doing a DSM → DSM import. Which is very straight forward.

I can tell you how to do this.

On the DSM 7 system

  1. Create USER Plex. It will default to group ‘users’

  2. Create Shared Folder “Plex” (exact case) on volume1 (I presume your largest volume)

  3. Using Filestation, mount the OLD NAS (exported Plex shared foldeer) on the new NAS (call it “oldPlex” folder name)

  4. Open the mounted “oldPlex” folder.

  5. Copy “Library” to the “Plex” share on the new NAS
    – This will take time but will bring over all files –
    – Make certain there are no copy errors

  6. In the “Plex” shared folder, right-click “Library” → Properties

  7. Permissions tab

  8. CREATE permission for user “Plex”

  9. Give it basic R/W,

  10. Check the box to Apply to this folder, subfolders, and files

  11. Also make user ‘Plex’ the owner.
    – this will take a bit to accomplish –

  12. When complete, close down the windows

  13. Now you’re ready to install Plex (downloaded from https://plex.tv/downloads)

  14. As it starts to install, it will fail because there is no username “PlexMediaServer”

  15. This is expected and normal.

  16. PMS from your DSM 6 system is now ready to “migrate” (which is also an import) from the “Plex” share to it’s final location in PlexMediaServer (new shared folder)

IF DSM barks about “Operaton Failed”, check resource monitor → processes.
you’ll find PlexMediaServer is running commands (find/realpath/ln).

Open a new tab to DSM 7, Look at the “Plex” shared folder
You’ll see “Migration.log”… it will show you current progress.
The final step is “Clean: /volume1/Plex”

Procedure here

After you’ve got everything running on DSM 7,

  1. User “Plex” isn’t needed
  2. The old “Plex” share isn’t needed.

You can remove both if you wish.

Thanks @ChuckPa. I’ve never worked in a multi-NAS configuration, so just to be sure I understand what you mean by “exported Plex shared folder” in step 3. By “exported”, do you mean “copied from the old NAS to [someplace]” or do you mean “exposed as a shared folder that the new NAS can mount”?

Also, I’m not quite clear where in your steps the actual media files get copied. On the original NAS, I have movies and TV shows in two separate folders under “volume1”, so presumably these need to be copied over explicitly and individually? Would that happen at step 3?

Thanks,
Ramon

FileStation has the ability to mount CIFS or NFS.

On Synology, being Linux, NFS between the two hosts is best

You enable NFS file sharing protocol Control Panel - File Services

Now you mount the old NAS “Plex” share

Select NFS

Now enter the IP and path to the Plex share on the old NAS

It will look like this:

After it mounts,

  • you can go into the newly mounted folder,

  • find Library,

  • Copy it to the share I had you make above

Thanks @ChuckPa, Library is copying over as we speak. I had to figure out to create a separate new shared top-level folder “dummy” to follow your example, but it seems to be working.

This seems to primarily be focused on moving over the Plex app files themselves (Library). Could I ask you to please clarify when/where the actual media folders (Movies, TV Shows)? Does this need to happen before the migration, or is the “also an import” referenced in step 16 where the media files will be copied from the old NAS to the new NAS?

@adaptable

Yes, you must also move/copy the media too. Create the same shared folders you have on the original system and copy that media.

This is why I thought you’d be moving the entire block of HDDs as a set (how most of us do it)

Hi @ChuckPa the media seem to have moved over successfully and the Plex app was installed, but it is not picking up the previous configuration. When launching Plex web client on the new NAS, I see both servers: the original Plex server with content, playlists, etc, and then an “empty” Plex server at the new NAS location.

I can re-add the various media libraries without too much trouble, but the playlists and collections will be painful to re-create by hand. Is there a way to debug this further?

Doing the same myself 1812+ to 1821+.
Plex is not installing on 1821+ for some reason, I will start a new thread for that topic.
Thanks for this thread, it will same me some frustration in the transition.

what do you have now on the new NAS ?

There are still several steps to complete if I’m understanding you correctly.

Hi Chuck –

It looks like I have all the media on the new NAS, and the Plex app is working as expected. What I’m now missing are the customizations, notably Playlists and Collections.

One weird thing I’ve noticed is that some of the media seem to have been re-indexed on the new server and matched against slightly different metadata. For example, the Pixar short “Boundin’” keeps showing up with year 2004. IMDB, The Movie DB, and the local filename all indicate 2003. I expect this will be difficult when migrating playlists and collections?

The file in question is in a Movie library configured with Scanner “Plex Movie” and Agent “Plex Movie”, which I believe represent that new and (theoretically) improved Plex Movie Agent described here Advanced settings Plex Movie Agent | Plex Support. Asking for an explicit “Fix Match…” shows a “Boundin’” entry show up as the top match with year 2004, but I can’t tell which metadata source this comes from.

Any suggestions how to debug this further please?

Best,
Ramon

(also, Happy New Year!)

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