I have changed from a Windows Server2012 to a Synology DS920+.
Sonos can successfully index its Media Library from a music share on the Synology NAS with or without the SMB1 NTLMv1 tweaks mentioned frequently in this forum. From that I agreed that Sonos has successfully removed the SMB1 issue. I am using the S2 controller.
Because I have a very large music collection, only a subset (wife’s classical) is on the share and is available via the Sonos Media Library. I successfully accessed the full collection via MediaMonkey configured as a media server on the Server2012.
I’ve set up both the Synology Media server and a Plex Media server, neither of which appear in the Sonos music sources list. They do appear (and work) on all other devices on my LAN (PCs and TVs).
A Twonky Media server on an antique Zyxel NSA310 likewise does not appear as a source on Sonos.
Currently the only way that I have found to access my whole connection is to run MediaMonkey configured as a media server on a PC, with the Synology Media Server as its source. Sonos can see this and play the contents from the Sonos S2 Controller (PC and/or Android based). It does however require the PC to be left on, which wasn’t an issue with the Server2012.
Why is it that Sonos cannot see these other media servers? I have tried both with and without the SMB1 and NTLMv1 tweaks, which I think are irrelevant in this case.