After migration to DSM 7 DVR has Problems with permissions

[DeepBluesee]

After switching to DSM 7 on my Synology rack station, I reset the permissions for the internal system user. Unfortunately, the following error message still comes:

[tom80H]

As per your parallel thread…
let’s go ahead and review the permissions on your Syno. Make sure the system user PlexMediaServer has write permissions to the share where you want Plex to record media.

Synology FAQ - Questions, Answers, and a few How-To's

FAQ 19: Setting permissions to allow Plex access to media files Before beginning, it’s important to remember one key point; Plex doesn’t have any special privileges on Synology except for being able to access the Video Transcoding acceleration hardware. It cannot read any of your files unless you expressly grant permission. This is a fundamental principle of Linux (which Synology uses for DSM) Because of how Synology grants permission, access to files is broken into two different …

Synology FAQ - Questions, Answers, and a few How-To's

FAQ 27 - Migrating an existing PMS from DSM 6 to DSM 7 Upgrading PMS from DSM 6 → DSM 7 DSM 7 no longer allows us to go find the metadata directory and use it across volumes before starting PMS (This is the lack of “root” privilege blocking). As such we require the following two conditions are met we will attempt to automatically migrate you; You have an existing DSM 6-created PMS installation and PMS is installed on the SAME STORAGE VOLUME as the “Plex” shared folder (this is critical) …