I regularly backup my NAS with Hyper Backup, so my media library is secured. But as I’ve made some configuration changes (mostly with my videos - grouping videos, changing metadata, etc. within Plex), those are not backed up under my present methodology.
Based on my research (Synology contact and web searching), it appears that I just need to backup Preferences.xml, and if my system crashed and it needed to be restored, I simply move the backed up Preferences.xml:
Is that correct? BTW, Preferences.xml is 1KB in size.