NAS Synology 1520+ "unexpected error" from Mac

[BlackJack]

You wrote that Roon Server is installed on the NAS. Is this true and is your Roon on the Mac connected to the Core on the NAS? If yes, then just point Roon to your local music library on the NAS (if needed and not automatically configured). You may also read the following post from the package maintainer about setting up RoonServer on DSM 7:

Roon Server on Synology DSM 7 Situation

I have put together a beta build of Roon Server for DSM7. It might still have issues and I am researching if they can be solved. Currently these issues are known: New audio files not added immediately to Roon’s Library Network shares can’t be mounted within Roon (See current workaround below) AAC streams might fail there is no audio support for local USB Audio devices (and as it currently seems, it won’t be possible) Network shares require root permissions, which are no longer allowed for T…

@Jerome_Malbrel

But I’m still stuck adding a network directory between Roon and Nas.

AGAIN: Adding network shares in Roon is impossible if the server runs on DSM 7.

@Jerome_Malbrel

I need to only point roon to nas because locally I don’t have enough memory.

If Roon Server runs on the NAS as you wrote, any directory on the NAS is already local. What you refer to as local is possibly your MAC and if that is true, is remote.