Migrating Plex from old hardware and software Synology (6.2) system to new (7.1)

This is where the details come into play.

This happens because, unless you’ve installed the DSM 7 package before, there isn’t any System Internal User named PlexMediaServer to grant permission to the Plex shared folder.

In DSM 6, the installer had full admin privileges and always could do whatever was needed. In DSM 7, Synology has removed ALL privileges.

What happens now is:

  1. Plex, like all apps, has been changed from “User” type to a new “Application” type. DSM calls this “System Internal User”.

  2. The name was changed from “Plex” → “PlexMediaServere” (mandated by DSM)

  3. The “Plex” shared folder had abandoned. A new shared folder “PlexMediaServer”, with new structure, is now created by DSM (the installer doesn’t have any control). DSM maintains all control over the shared folder. If shared folder PlexMediaServer gets the permissions damaged, the user must fix it (which means scream to Chuck for help.. haha)

The process is

  1. First attempt to install the DSM 7 package should fail during PRE-INSTALL checking . This is expected. Don’t ignore it.

https://global.discourse-cdn.com/plex/optimized/4X/f/4/d/f4dd79d791b35a4d7cb8e97a5761de580158574f_2_690x521.png

  1. Abandon the first installation attempt and now set the permissions such that the silently created System Internal User “PlexMediaServer” has Full Control of the entire Plex shared folder. ( This sounds scary but easy to do. Follow it here )

  2. Now follow the steps here.

IF anything deviates from what is documented or what you expect, Grab a screenshot and post it here.

I’ll be around a while tonight so we can get this started.